{"title":"CSI Mysteries","description":"\u003cp\u003eA \u003cstrong\u003eCSI Mystery\u003c\/strong\u003e is a whole investigation on paper. Students read the case file, meet the suspects, then work through five clue pages, each one a different set of math problems. Every clue solved eliminates suspects; the last suspect standing is the culprit. Because a wrong answer points at nobody, students self-correct, and a substitute can run the lesson cold with the answer key in hand.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e90 printable CSI mystery worksheets\u003c\/strong\u003e here cover Grades 3 to 8: multiplication and division, order of operations, perimeter and area, integers, fractions, decimals, rounding, place value, classifying shapes and angles, and mixed grade-level review. Our multiplication and division Back-to-School case has been bought by more than 3,000 teachers on Teachers Pay Teachers; the Order of Operations mystery is the best-selling resource Kiwiland has ever made. Seasonal cases for Halloween, Christmas, back to school and end of year are here too.\u003c\/p\u003e\n\u003cp\u003eEach pack is print-and-go: story, suspect chart, five clue pages and a full answer key. No apps, passwords or digital locks. Teachers use them for \u003cstrong\u003esub plans, math centers, early finishers, test prep and review days\u003c\/strong\u003e, and Kiwiland resources hold a 4.84-star rating across more than 10,000 reviews.\u003c\/p\u003e\n\u003cp\u003eNot sure which format you want? \u003ca href=\"\/blogs\/teaching-blog\/what-is-a-math-detective-activity\"\u003eWhat Is a Math Detective Activity?\u003c\/a\u003e explains how both lines work. For one-page cases, see \u003ca href=\"\/collections\/mystery-detective\"\u003eMystery Detective\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"long-division-csi-mystery-activity","title":"Long Division CSI Mystery Worksheets | Grades 4–6 | The Divided Monster","description":"\u003cp\u003eLong division practice worksheets, division with remainders activities, and multi-digit division word problems for 4th grade and 5th grade are all included in this printable CSI Mystery Detective case. Students divide 3-digit and 4-digit numbers by a 1-digit divisor, with and without remainders, in a pack built for math centers, early finishers, sub days, homework and end-of-unit review - completely no prep, just print and go.\u003c\/p\u003e\n\u003cp\u003eLong division is the skill students most want to give up on, and the one that rewards repetition most. This case hides the repetition inside a mystery, so a class that groans at a page of quotients will work through the whole set to find out who did it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included in This Case?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDivision basic facts through 12, so recall is warm before the algorithm starts\u003c\/li\u003e\n  \u003cli\u003eDividing 3-digit numbers by a 1-digit divisor with no remainders\u003c\/li\u003e\n  \u003cli\u003eDividing 4-digit numbers by a 1-digit divisor with no remainders\u003c\/li\u003e\n  \u003cli\u003eDividing 4-digit numbers by a 1-digit divisor with remainders, and what the remainder means\u003c\/li\u003e\n  \u003cli\u003eDivision word problems, where students decide what to divide before they divide it\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOne case to crack, solved clue by clue as the division gets harder.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA CSI Mystery Detective is a print-and-solve math activity - an escape room without the locks. Students work through math problems to collect evidence, eliminate suspects and reveal who did it, so real skill practice comes wrapped in a detective hook that keeps the whole class engaged. The pages check themselves: a wrong answer stops the mystery in its tracks, so students go back and find their own mistake before it ever reaches your marking pile.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAbout This Case\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSomething very strange has happened at Monster School. A student named Squirmy has been split into two conflicting parts, and nothing he does works properly any more. Principal Spookington needs a detective who can divide carefully enough to work out who is behind it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMath centers and rotations\u003c\/li\u003e\n  \u003cli\u003eIndependent long division practice and morning work\u003c\/li\u003e\n  \u003cli\u003eEarly finisher and enrichment folders\u003c\/li\u003e\n  \u003cli\u003eEmergency sub days - hand it over and it runs itself\u003c\/li\u003e\n  \u003cli\u003eRTI, intervention and small-group work\u003c\/li\u003e\n  \u003cli\u003eHomework and homeschool lessons\u003c\/li\u003e\n  \u003cli\u003eEnd-of-unit review, test prep and the last weeks of the year\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for 4th and 5th grade. The basic facts and 3-digit pages give 3rd graders moving into long division a way in, and the 4-digit and remainder pages give 6th graders who still need the algorithm real practice without a babyish worksheet.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, so students catch their own errors\u003c\/li\u003e\n  \u003cli\u003ePrints clean in black and white\u003c\/li\u003e\n  \u003cli\u003eHolds the attention of students who avoid long division\u003c\/li\u003e\n  \u003cli\u003eReal standards-aligned division practice, not busy work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eSave with the bundle: CSI Multiplication and Division Fun, 3rd 4th 5th Grade Worksheets\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Multiplication-and-Division-Fun-3rd-4th-5th-Grade-Worksheets-11990804\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Multiplication-and-Division-Fun-3rd-4th-5th-Grade-Worksheets-11990804\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detectives, division and multiplication practice packs, and detective-themed stories for elementary classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52002732147058,"sku":"9571010","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/long-division-worksheets-mystery-detective-the-divided-monster-school-9571010.jpg?v=1792459696"},{"product_id":"addition-subtraction-summer-csi-mystery","title":"Summer Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Hot Dogs","description":"\u003cp\u003eAre you looking for addition and subtraction math activities wrapped inside a CSI Mystery Detective? Then these \u003cstrong\u003eaddition with regrouping worksheets and mixed word problems\u003c\/strong\u003e are for you. Although this has a summer theme, it is also perfect for \u003cstrong\u003eend-of-year math review\u003c\/strong\u003e, \u003cstrong\u003eseasonal spiral practice\u003c\/strong\u003e, and \u003cstrong\u003eback-to-school math centers\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eCapture your students' attention with this CSI Mystery Detective by taking them on a journey to solve addition and subtraction problems and puzzles. Students narrow down the possible options by completing the activities and worksheets and marking them off until one person is left. Can you find that person?\u003c\/p\u003e\n\n\u003cp\u003eThis detective case includes:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 of 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with 3 digits\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition\u003c\/li\u003e\n  \u003cli\u003eWord problems with addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eIncludes color and black and white versions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese Mystery Detectives are designed for 2nd, 3rd, and 4th grade students. They can also be used with struggling 5th grade students who need a little extra work and reinforcement in adding and takeaways—or to challenge gifted and talented 2nd graders. These printable math puzzles are also great to leave for a sub or to use for \u003cstrong\u003eno-prep math review days\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs are an independent escape room or crack the code type of fun math activity where instead of using locks, students identify suspects with puzzles and word problems.\u003c\/strong\u003e This mystery is perfect for the start of the year with \u003cstrong\u003eback-to-school problem solving activities\u003c\/strong\u003e and printable math detective fun.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow \u003cstrong\u003eKiwiland Education\u003c\/strong\u003e to discover more CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52106387587442,"sku":"9566799","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/addition-and-subtraction-1-9566799.jpg?v=1792460141"},{"product_id":"fall-csi-mystery-multiplication-division","title":"Fall Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–6 | The Missing Leaves","description":"\u003cp\u003eAre you looking for fun Fall math activities wrapped inside a CSI Mystery Detective? Then these multiplication and division activities are for you. Although it has a Fall theme, it is also perfect for Halloween math centers, October math, Thanksgiving review, or seasonal multiplication and division practice.\u003c\/p\u003e\n\n\u003cp\u003eCapture your students' attention with this CSI Mystery Detective, a printable math activity, by taking them on a journey to solve math problems and puzzles. Students narrow down the possible options by completing each task and marking off suspects until only one remains. Can you solve the mystery?\u003c\/p\u003e\n\n\u003cp\u003eThis case includes multiplication and division problems up to the 12 times table. Answers are included to make grading or student self-checking quick and easy.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are an independent escape room or crack-the-code type of fun math activity in which students identify suspects using puzzles and word problems instead of locks. This mystery is a great way to build fluency and keep students engaged with a no-prep printable during the busy Fall season.\u003c\/p\u003e\n\n\u003cp\u003eThis seasonal resource is ideal for independent practice, spiral review, early finishers, sub plans, or math rotations. Designed for students working at a 3rd to 6th grade level, but flexible enough to challenge advanced learners or support those needing extra review.\u003c\/p\u003e\n\n\u003cp\u003eLove this fall CSI Mystery Detective? Follow Kiwiland Education to get early access to new CSI Mystery Detective packs, exclusive discounts, and engaging seasonal resources.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173781533042,"sku":"12470937","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/fall-math-worksheets-multiplication-and-division-facts-mystery-detective-autumn-12470937.jpg?v=1792459542"},{"product_id":"multiplication-csi-mystery-halloween-monster-madness","title":"Multiplication CSI Mystery Worksheets | Grades 4–6 | Monster Madness","description":"\u003cp\u003eAre you looking for a fun 4th, 5th, and 6th grade CSI Mystery Detective to engage your students in multiplication math practice, basic facts, and word problems? Then this printable CSI Mystery Detective is for you!\u003c\/p\u003e\n\n\u003cp\u003eCapture your students' attention with this no-prep mystery by taking them on a journey to solve multiplication puzzles and clues. Students narrow down the possible suspects by completing each math task and marking them off until only one remains. Can your class crack the case?\u003c\/p\u003e\n\n\u003cp\u003eThis printable CSI Mystery Detective is perfect for Halloween, but it also works well at the start of the school year, end-of-year review, or as a seasonal spiral activity. It's also a great fit for homeschool math enrichment and independent learning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2x1 digit multiplication\u003c\/li\u003e\n  \u003cli\u003eMultiplication maze\u003c\/li\u003e\n  \u003cli\u003eMultiplication match-up\u003c\/li\u003e\n  \u003cli\u003eMultiplication basic facts\u003c\/li\u003e\n  \u003cli\u003eMultiplication word problems\u003c\/li\u003e\n  \u003cli\u003eAnswer key included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are independent escape room or crack-the-code types of fun math activities in which students identify suspects using puzzles and word problems instead of locks. This no-prep multiplication review is ideal for reinforcing fact fluency, solving real-world word problems, and bringing seasonal fun to your classroom.\u003c\/p\u003e\n\n\u003cp\u003eUse it for independent work, partner tasks, early finishers, sub plans, math centers, or a fun alternative assessment during the Halloween season.\u003c\/p\u003e\n\n\u003cp\u003eLove this multiplication mystery? Follow Kiwiland Education to discover more seasonal Mystery Detectives, multiplication fluency puzzles, and printable CSI activities for your classroom or homeschool.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173838418290,"sku":"12371734","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/2-digit-multiplication-worksheets-mystery-detective-monster-school-printable-12371734.jpg?v=1792460000"},{"product_id":"place-value-csi-mystery-ai-classroom-takeover","title":"Place Value CSI Mystery Worksheets | Grades 3–6 | AI Classroom Takeover","description":"\u003cp\u003eAre you looking for a fun and engaging way to review place value and number sense? This CSI Mystery Detective is a no-prep math packet covering key skills including place value to 1000, 10 more\/10 less, 100 more\/100 less, and ordering numbers. Students will solve math puzzles to narrow down suspects and crack the case!\u003c\/p\u003e\n\n\u003cp\u003eThese CSI Mystery Detective activities turn learning into an adventure. Students complete a series of printable worksheets, using place value strategies and number comparisons to eliminate suspects from the list until one remains. This mystery is ideal for reinforcing key number concepts in a fun and interactive way.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOrdering numbers in the hundreds and thousands\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with 10 more and 10 less\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction of tens, hundreds, and thousands\u003c\/li\u003e\n  \u003cli\u003eGreater than \/ less than with numbers to 1000\u003c\/li\u003e\n  \u003cli\u003eWriting numbers in word form\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are independent escape room or crack-the-code types of fun math activities in which students identify suspects using puzzles and word problems instead of locks. This mystery is perfect for the start of the school year, for end-of-year math review, and for spiral practice all year long. These no-prep activities are also a hit with homeschool students looking for a more interactive way to practice math skills.\u003c\/p\u003e\n\n\u003cp\u003eThis printable place value mystery is designed for 3rd, 4th, and 5th grade students, and it's flexible enough to differentiate for advanced learners or review with those who need extra practice.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom or homeschool.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173873447282,"sku":"12212740","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-worksheets-mystery-detective-add-subtract-10-100-1000-printable-12212740.jpg?v=1792460004"},{"product_id":"multiplication-division-csi-mystery-ai-classroom-takeover","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–6 | AI Classroom Takeover","description":"\u003cp\u003eEngage your 3rd grade, 4th grade, and 5th grade students in this AI-themed CSI Mystery Detective focused on multiplication and division! This printable escape room-style activity includes math puzzles, critical thinking challenges, and fact fluency practice—all wrapped up in an exciting Artificial Intelligence mystery.\u003c\/p\u003e\n\n\u003cp\u003ePerfect for back-to-school math review, end-of-year activities, or any time you want to reinforce multiplication and division up to 12×12, this mystery will have students narrowing down suspects by solving math clues and marking them off the list. Can your class stop the AI Classroom Takeover?\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication and division facts through 12×12\u003c\/li\u003e\n  \u003cli\u003eMath puzzle worksheets and suspect elimination\u003c\/li\u003e\n  \u003cli\u003ePrintable color and black-and-white versions\u003c\/li\u003e\n  \u003cli\u003eComplete answer key\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are an independent escape room or crack-the-code type of fun math activity where instead of using locks, students identify suspects using puzzles and word problems. This engaging format gives students a clear purpose for practicing math and boosts motivation during seasonal or transitional times.\u003c\/p\u003e\n\n\u003cp\u003eThis no-prep mystery is ideal for classrooms and homeschool alike. It works great in math centers, early finisher bins, sub plans, or as a fun alternative to traditional worksheets.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more multiplication and division Mystery Detectives, printable CSI activities, and seasonal challenges!\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173909262706,"sku":"11976640","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-and-division-worksheets-mystery-detective-ai-takeover-12x12-11976640.jpg?v=1792459837"},{"product_id":"addition-subtraction-csi-mystery-ai-classroom-takeover","title":"Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 3–5 | AI Classroom Takeover","description":"\u003cp\u003eLooking for a fun and low-prep way to review addition and subtraction with regrouping? This AI-themed CSI Mystery Detective is the perfect back-to-school or summer review math activity for your 3rd grade, 4th grade, and 5th grade students. With a built-in detective storyline, students solve a series of puzzles to uncover who's behind the AI Classroom Takeover!\u003c\/p\u003e\n\n\u003cp\u003eThis printable mystery engages students in solving math problems and narrowing down suspects. As they complete each activity, they eliminate options from the list until only one person remains. It's a great way to reinforce fluency and critical thinking in a meaningful context.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding multiple 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eSubtraction from 1000\u003c\/li\u003e\n  \u003cli\u003e3-digit subtraction with regrouping\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n  \u003cli\u003ePrint-and-go format (color and black-and-white)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are independent escape room or crack-the-code types of fun math activities where instead of using locks, students identify suspects using puzzles and word problems. They're perfect for back-to-school, summer school, or end-of-year math review.\u003c\/p\u003e\n\n\u003cp\u003eThis mystery is designed for 3rd and 4th grade students, but can also be used with struggling 5th graders who need extra practice or gifted 2nd grade students looking for a challenge. These make excellent sub plans or review tasks for early finishers—and are also a hit with homeschool families!\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more addition and subtraction Mystery Detectives, printable CSI games, and engaging seasonal activities!\u003c\/p\u003e\n\n\u003cp\u003eClick to follow me\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland Education\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy Mystery Detectives, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI: CSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI: CSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI: CSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52173970735474,"sku":"11976567","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/3-digit-addition-and-subtraction-worksheets-regrouping-mystery-detective-printable-11976567.jpg?v=1792459386"},{"product_id":"earth-day-csi-mystery-multiplication-division","title":"Earth Day Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–6 | The Eco-Villain","description":"\u003cp\u003eLooking for a fun Earth Day or Spring CSI Mystery Detective to engage your students in \u003cstrong\u003emultiplication and division\u003c\/strong\u003e? 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No locks needed — just engaging puzzles and elimination-style detective work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis Place Value Pirate CSI Mystery Detective includes:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOrdering numbers in the hundreds and thousands\u003c\/li\u003e\n  \u003cli\u003e10 more \/ 10 less and 100 more \/ 100 less\u003c\/li\u003e\n  \u003cli\u003eComparing numbers to 1,000 using greater than and less than\u003c\/li\u003e\n  \u003cli\u003eAdding and subtracting 2- and 3-digit numbers\u003c\/li\u003e\n  \u003cli\u003eAnswer key included for easy grading\u003c\/li\u003e\n  \u003cli\u003eColor and black \u0026amp; white versions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eUse this CSI Mystery Detective for:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA back-to-school place value review\u003c\/li\u003e\n  \u003cli\u003eNo-prep math centers or sub plans\u003c\/li\u003e\n  \u003cli\u003eEngaging test prep or early finisher activities\u003c\/li\u003e\n  \u003cli\u003eEnd-of-year math spiral review\u003c\/li\u003e\n  \u003cli\u003eHomeschool enrichment or reinforcement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs are independent escape room or crack-the-code style math activities.\u003c\/strong\u003e Instead of physical locks, students solve math problems to eliminate suspects and crack the case.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to explore more engaging Mystery Detectives and be the first to hear about new releases, special discounts, and fresh printables for your classroom.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52292775543154,"sku":"10131652","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-worksheets-and-activities-1-10131652.jpg?v=1792460004"},{"product_id":"matariki-new-zealand-csi-mystery-addition-and-subtraction","title":"Matariki Addition \u0026 Subtraction CSI Mystery Worksheets | Years 4–6 | The Missing Kumara","description":"\u003cp\u003eLooking for \u003cstrong\u003eMatariki math activities\u003c\/strong\u003e or \u003cstrong\u003eNew Zealand addition and subtraction worksheets\u003c\/strong\u003e for upper primary students? This \u003cstrong\u003eCSI Mystery Detective – The Missing Kumara\u003c\/strong\u003e is a set of no-prep CSI math worksheets that will spark curiosity and critical thinking as students solve problems to uncover who stole the kumara from the hāngi. It's the perfect \u003cstrong\u003eMāori New Year resource\u003c\/strong\u003e, but also works well any time of year to bring New Zealand culture into the classroom.\u003c\/p\u003e\n\n\u003cp\u003eThis engaging \u003cstrong\u003eaddition and subtraction CSI-style case\u003c\/strong\u003e is great for \u003cstrong\u003eyear 4–6 students\u003c\/strong\u003e and can also support struggling year 7 students or extend capable year 3 learners. Students work through the case by solving puzzles, completing word problems, and eliminating suspects until the thief is revealed.\u003c\/p\u003e\n\n\u003cp\u003eThis Matariki-themed case includes:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 with 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e2-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with 3-digit and 1-digit numbers\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition problems\u003c\/li\u003e\n  \u003cli\u003eWord problems with multi-step operations\u003c\/li\u003e\n  \u003cli\u003eBasic Te Reo Māori language elements\u003c\/li\u003e\n  \u003cli\u003eFull-color and black-and-white printable versions\u003c\/li\u003e\n  \u003cli\u003eAnswer keys included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs are classroom escape-room alternatives\u003c\/strong\u003e—students crack the code not with locks but by solving clues and narrowing down a list of suspects.\u003c\/p\u003e\n\n\u003cp\u003eIdeal for:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eMatariki math activities\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMāori New Year units\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNew Zealand cultural celebrations\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMath reviews\u003c\/strong\u003e, reliever lessons, and early finishers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFollow me to find more engaging CSI Mystery Detective cases and receive updates, exclusive discounts, and fresh printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Alien Invasion: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Alien-Invasion-3789957\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Alien-Invasion-3789957\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Zombie Attack: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Zombie-Attack-3799849\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Zombie-Attack-3799849\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Jungle Juice Fever: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Jungle-Juice-Fever-3765647\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Jungle-Juice-Fever-3765647\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52292797792626,"sku":"9663494","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/matariki-hangi-missing-kumara-addition-subtraction-mystery-detective-nz-9663494.jpg?v=1792459697"},{"product_id":"addition-subtraction-csi-mystery-grades-3-5-missing-dragon-eggs","title":"Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 3–6 | The Missing Dragon Eggs","description":"\u003cp\u003eAre you looking for an exciting \u003cstrong\u003efantasy-themed addition and subtraction activity\u003c\/strong\u003e to engage your 3rd, 4th, or 5th grade students? \u003cstrong\u003eThe Missing Dragon Eggs\u003c\/strong\u003e is a \u003cstrong\u003eCSI Mystery Detective\u003c\/strong\u003e pack of CSI math worksheets that combines regrouping practice with a magical detective twist—perfect for building number sense, critical thinking, and problem-solving.\u003c\/p\u003e\n\n\u003cp\u003eIn this independent \u003cstrong\u003ecrack-the-code style\u003c\/strong\u003e case, students become detectives solving puzzles to eliminate suspects and find out who stole the dragon eggs. With minimal prep required, this printable activity is ideal for back to school, end of year review, or anytime you want to boost engagement in your classroom or homeschool.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis case includes:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding multiple 2-digit numbers together\u003c\/li\u003e\n  \u003cli\u003eAddition of 3-digit numbers\u003c\/li\u003e\n  \u003cli\u003eSubtraction from 1000\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003e3-digit subtraction from 1000\u003c\/li\u003e\n  \u003cli\u003eIncludes both color and black-and-white versions\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis fun activity is designed for \u003cstrong\u003e3rd and 4th grade\u003c\/strong\u003e, but is also great for \u003cstrong\u003estruggling 5th graders\u003c\/strong\u003e who need review or \u003cstrong\u003eadvanced 2nd graders\u003c\/strong\u003e ready for a challenge. It also works well in homeschool settings, for review, and as an engaging activity for substitute days.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs\u003c\/strong\u003e are a unique, low-prep alternative to escape rooms that use puzzles instead of locks. Students must crack the code to solve the case and identify the culprit—keeping them motivated and learning.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more engaging CSI Mystery Detective cases and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Alien Invasion: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Alien-Invasion-3789957\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Alien-Invasion-3789957\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Zombie Attack: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Zombie-Attack-3799849\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Zombie-Attack-3799849\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery - Jungle Juice Fever: \u003ca href=\"https:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Jungle-Juice-Fever-3765647\"\u003ehttps:\/\/www.teacherspayteachers.com\/Product\/CSI-Mystery-Jungle-Juice-Fever-3765647\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309264695666,"sku":"9597857","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/the-missing-dragon-eggs-addition-subtraction-mystery-detective-grades-3-5-9597857.jpg?v=1792459386"},{"product_id":"multiplication-division-csi-mystery-missing-medallion","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–6 | The Missing Medallion","description":"\u003cp\u003eLooking for engaging \u003cstrong\u003emath practice\u003c\/strong\u003e with multiplication and division facts? \"\u003cstrong\u003eThe Missing Medallion\u003c\/strong\u003e\" is a museum-themed \u003cstrong\u003eCSI Mystery Detective\u003c\/strong\u003e that challenges your \u003cstrong\u003e3rd grade, 4th grade, 5th grade, or 6th grade\u003c\/strong\u003e students to solve puzzles, crack clues, and build math fluency — all while solving a crime!\u003c\/p\u003e\n\n\u003cp\u003eThis fun and rigorous \u003cstrong\u003eescape room-style worksheet activity\u003c\/strong\u003e includes multiplication and division problems up to 12 × 12. As students work through each math task, they eliminate suspects and get closer to discovering who stole the museum's prized medallion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication practice (up to 12 × 12)\u003c\/li\u003e\n  \u003cli\u003eDivision problems and fact fluency\u003c\/li\u003e\n  \u003cli\u003eMixed multiplication \u0026amp; division puzzles\u003c\/li\u003e\n  \u003cli\u003eWord problems and clue-based suspect elimination\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for easy grading\u003c\/li\u003e\n  \u003cli\u003ePrintable PDF – no prep required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerfect for:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMath review and enrichment\u003c\/li\u003e\n  \u003cli\u003eBack to school or end of year\u003c\/li\u003e\n  \u003cli\u003eFall, spring, or anytime math lessons\u003c\/li\u003e\n  \u003cli\u003eHomeschool math activities\u003c\/li\u003e\n  \u003cli\u003eSub plans and early finishers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love It:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e✔️ Builds fact fluency through logic and storytelling\u003c\/p\u003e\n\n\u003cp\u003e✔️ Engages students in a fun detective challenge\u003c\/p\u003e\n\n\u003cp\u003e✔️ Easy to prep — just print and go\u003c\/p\u003e\n\n\u003cp\u003e✔️ Works great for individuals, partners, or small groups\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs\u003c\/strong\u003e are printable escape room alternatives that promote critical thinking, problem-solving, and student engagement — no tech or locks required!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this CSI-style CSI Mystery Detective?\u003c\/strong\u003e Follow Kiwiland Education to discover more printable math escape rooms, clue-based logic activities, and engaging curriculum resources.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective packs, no-prep math activities, and detective-themed stories for the classroom.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309356380530,"sku":"9486829","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-and-division-1-9486829.jpg?v=1792459837"},{"product_id":"spring-csi-mystery-addition-subtraction-worksheets","title":"Spring Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Flowers","description":"\u003cp\u003eLooking for fun and engaging \u003cstrong\u003espring addition and subtraction worksheets\u003c\/strong\u003e for 3rd and 4th grade? This \u003cstrong\u003eCSI Mystery Detective\u003c\/strong\u003e is the perfect printable \u003cstrong\u003emath activity\u003c\/strong\u003e for Easter, Earth Day, and spring math review after the break. Students will solve puzzles using \u003cstrong\u003e3-digit addition with regrouping\u003c\/strong\u003e, subtraction from 1000, and multi-step problems — all while uncovering clues in a mystery story!\u003c\/p\u003e\n\n\u003cp\u003eThis \u003cstrong\u003eno-prep spring math game\u003c\/strong\u003e will keep students excited and focused as they work through each math puzzle to eliminate suspects. With a detective-style storyline and self-checking clues, this printable resource is ideal for \u003cstrong\u003espiral review, math stations, enrichment, early finishers, or even sub plans\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis Detective Case Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 of 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eMixed 3-digit addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition\u003c\/li\u003e\n  \u003cli\u003eWord problems using addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eColor and black-and-white versions included\u003c\/li\u003e\n  \u003cli\u003eFull answer keys\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese \u003cstrong\u003espring-themed math worksheets\u003c\/strong\u003e are designed for 3rd and 4th grade students, but they're also great for \u003cstrong\u003estruggling 5th graders\u003c\/strong\u003e who need extra practice with basic operations, or \u003cstrong\u003egifted 2nd graders\u003c\/strong\u003e ready for a challenge. Perfect for \u003cstrong\u003ehomeschoolers\u003c\/strong\u003e, this mystery can be completed independently or in pairs.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow \u003cstrong\u003eKiwiland Education\u003c\/strong\u003e to discover more \u003cstrong\u003einteractive Mystery Detectives\u003c\/strong\u003e and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309548171634,"sku":"9425399","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/spring-mystery-detective-1-9425399.jpg?v=1792460140"},{"product_id":"earth-day-csi-mystery-addition-subtraction-worksheets","title":"Earth Day Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Recycling Bins","description":"\u003cp\u003e\u003cstrong\u003eLooking for Earth Day CSI math worksheets that make addition and subtraction fun?\u003c\/strong\u003e This printable CSI Mystery Detective is the perfect spring activity for 2nd, 3rd, and 4th grade students. Designed with Earth Day in mind, these no-prep worksheets are ideal for April math review, Earth Day classroom events, or the days around spring break and Easter.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIn this engaging CSI-style mystery, students use their math skills to crack the case of the missing seed packets.\u003c\/strong\u003e With every correct answer, they eliminate a suspect and move one step closer to solving the Earth Day-themed mystery. This activity combines addition, subtraction, word problems, and regrouping practice with logic and deduction—no locks or devices needed!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis resource is perfect for:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you need Earth Day math worksheets, spring-themed problem-solving tasks, or fun enrichment for early finishers, this printable CSI Mystery Detective supports classroom instruction, math centers, and even homeschool review. Teachers love using these mysteries as independent work, sub plans, or engaging end-of-week practice. Great for students who need a challenge—and fun for those who enjoy puzzles.\u003c\/p\u003e\n\n\u003cp\u003e✅ What's Included:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 of 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003e3-digit addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition problems\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction word problems\u003c\/li\u003e\n  \u003cli\u003eColor and black-and-white worksheet versions\u003c\/li\u003e\n  \u003cli\u003eFull answer key\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs are a fun, escape room–style experience\u003c\/strong\u003e where students solve puzzles and eliminate suspects—no locks or devices required. Just print and go! This resource is especially useful for spring classroom review, Earth Day activities, and spiral math practice. Also great for reinforcing skills in a fun, student-led format.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow \u003cstrong\u003eKiwiland Education\u003c\/strong\u003e to discover more engaging CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309599158642,"sku":"9369396","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/earth-day-mystery-detective-addition-and-subtraction-1-9369396.jpg?v=1792459542"},{"product_id":"multiply-divide-integers-csi-mystery-worksheets","title":"Multiply \u0026 Divide Integers CSI Mystery Worksheets | Grades 6–9 | Zombie Leader","description":"\u003cp\u003eNeed fun and engaging math practice with multiplying and dividing integers? This zombie-themed CSI Mystery Detective is perfect for Halloween math, fall lessons, back-to-school review, or anytime during the year. Designed for 6th, 7th, 8th, and 9th grade students, it reinforces integer operations through puzzles, problem-solving, and high-interest storytelling.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eZombie Outbreak Mystery Story:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA mysterious virus has infected your school. Students and teachers are turning into zombies—and only math can stop it. Your students must use their integer skills to solve puzzles, eliminate suspects, and uncover the identity of the original zombie. Can they save the school?\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplying integers worksheets\u003c\/li\u003e\n  \u003cli\u003eDividing integers puzzles\u003c\/li\u003e\n  \u003cli\u003eWord problems involving integers\u003c\/li\u003e\n  \u003cli\u003eCritical thinking tasks\u003c\/li\u003e\n  \u003cli\u003eSuspect elimination mystery format\u003c\/li\u003e\n  \u003cli\u003eComplete answer key for easy grading\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerfect For:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHalloween math activities\u003c\/li\u003e\n  \u003cli\u003eFall math review\u003c\/li\u003e\n  \u003cli\u003eMiddle school integers practice\u003c\/li\u003e\n  \u003cli\u003e6th–9th grade enrichment\u003c\/li\u003e\n  \u003cli\u003eMath test prep with a twist\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eEngaging, no-prep lessons\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese print-and-go mystery worksheets offer a math escape room alternative—no locks or technology required. Just hand out the pages, and let students solve the mystery through strategic problem-solving and logic.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFollow Kiwiland Education\u003c\/strong\u003e to discover more printable CSI Mystery Detective packs and receive updates, discounts, and new classroom favorites!\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309698969970,"sku":"9281271","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplying-and-dividing-integers-1-9281271.jpg?v=1792460001"},{"product_id":"groundhog-day-csi-mystery-addition-subtraction-worksheets","title":"Groundhog Day Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Groundhog","description":"\u003cp\u003e\u003cstrong\u003eLooking for Groundhog Day math activities to keep your students engaged?\u003c\/strong\u003e This Groundhog Day CSI Mystery Detective combines 3-digit addition and subtraction with an exciting detective twist! Perfect for 2nd, 3rd, and 4th grade students, this fun math review is ideal for January and February, especially in the days leading up to or after Groundhog Day.\u003c\/p\u003e\n\n\u003cp\u003eIn The Missing Groundhog, students become detectives, solving addition and subtraction puzzles to eliminate suspects. With each completed worksheet, they get closer to discovering who took the groundhog. Designed to boost critical thinking and math fluency, this activity turns your math lesson into an engaging adventure.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 of 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eMixed addition and subtraction (3-digit)\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition\u003c\/li\u003e\n  \u003cli\u003eWord problems with addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eFull-color and black-and-white versions\u003c\/li\u003e\n  \u003cli\u003eComplete answer sheets for easy grading\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love It:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis CSI-style math activity is perfect for back-to-school, Groundhog Day, winter review, or anytime your class needs meaningful math practice. It also works great for early finishers, math centers, sub plans, or holiday-themed lessons. Many teachers report high engagement, especially when using these activities around holidays or seasonally themed events.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective packs are a fun, escape room–style worksheet activity where students solve clues and eliminate suspects to crack the case—no locks or apps required! If your students love puzzles and detective stories, they'll love these printable math worksheets.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52309751333234,"sku":"9040962","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/groundhog-day-math-1-9040962.jpg?v=1792459696"},{"product_id":"winter-csi-mystery-addition-subtraction-worksheets","title":"Winter Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Big Freeze","description":"\u003cp\u003e\u003cstrong\u003eAre you looking for a fun and engaging winter math activity to reinforce addition and subtraction?\u003c\/strong\u003e This Frozen Classroom CSI Mystery Detective is perfect for 2nd, 3rd, and 4th grade students who need practice with 3-digit addition and subtraction, including regrouping. Ideal for winter math lessons, post-winter break review, and early finisher tasks, this detective-themed math packet adds excitement to January and February learning!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStoryline:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eGoosebumps appear on your skin as you enter the classroom. Icicles hang from the furniture. Your pencils are frozen together. Who did this? Become a math detective and follow the trail of frosty clues to eliminate suspects and solve the mystery of the frozen classroom!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 of 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction with 3-digit numbers\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition\u003c\/li\u003e\n  \u003cli\u003eWord problems with addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n  \u003cli\u003eFull-color and black \u0026amp; white versions for printing flexibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThese no-prep printable worksheets are perfect for:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eWinter math centers\u003c\/li\u003e\n  \u003cli\u003eMath review after winter break\u003c\/li\u003e\n  \u003cli\u003eEarly finishers\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eEngaging homework or enrichment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCSI Mystery Detective packs\u003c\/strong\u003e are a classroom escape-room style activity where students crack the case using math problems instead of locks. Fun, effective, and standards-aligned—your students won't even realize they're practicing key math skills!\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more CSI Mystery Detective packs and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Alien Invasion\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Zombie Attack\u003c\/p\u003e\n\n\u003cp\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52310638788978,"sku":"8721476","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/winter-mystery-detective-addition-and-subtraction-1-8721476.jpg?v=1792460271"},{"product_id":"halloween-csi-mystery-addition-subtraction-worksheets","title":"Halloween Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Witch's Brew","description":"\u003cp\u003e\u003cstrong\u003eAre you looking for fun Halloween math activities that actually get your students excited about practicing addition and subtraction?\u003c\/strong\u003e This CSI Mystery Detective is a perfect choice for October math lessons, fall centers, or spooky review days. Designed for 2nd, 3rd, and 4th grade students, this engaging escape room–style math activity builds number fluency, critical thinking, and problem-solving skills—all while students solve a mysterious case of stolen potion ingredients!\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Mystery:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA witch is in trouble! Her magical ingredients—Dead Sea Salt, Vile Toad Skin, and Snake Skull—have mysteriously vanished under the full moon. She needs your students' math detective skills to uncover who stole them. Can your class crack the case?\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 with 2-digit numbers\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003e3-digit subtraction from 1000\u003c\/li\u003e\n  \u003cli\u003eMixed 3-digit addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition\u003c\/li\u003e\n  \u003cli\u003eWord problems involving addition and subtraction\u003c\/li\u003e\n  \u003cli\u003eColor and black \u0026amp; white versions\u003c\/li\u003e\n  \u003cli\u003eAnswer sheets included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuggested Uses:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003ePerfect for Halloween math centers, October early finisher tasks, or fun homework. Great for review, sub plans, or even end-of-term challenges. These math worksheets are ideal for independent learning, and work great in homeschool settings too.\u003c\/p\u003e\n\n\u003cp\u003eThis escape-room inspired mystery works without locks! Instead, students eliminate suspects as they solve each puzzle and get closer to finding the culprit. The storyline and puzzles keep them motivated from start to finish.\u003c\/p\u003e\n\n\u003cp\u003eLove this resource? Follow Kiwiland Education to discover more interactive math escape rooms and receive updates, discounts, and exciting new printables for your classroom.\u003c\/p\u003e\n\n\u003cp\u003eThank you\u003c\/p\u003e\n\n\u003cp\u003eKiwiland\u003c\/p\u003e\n\n\u003cp\u003eIf you are interested in this product and your students enjoy mysteries, I have additional resources that will complement this one.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCSI Mystery Detective - Alien Invasion\u003c\/li\u003e\n  \u003cli\u003eCSI Mystery Detective - Zombie Attack\u003c\/li\u003e\n  \u003cli\u003eCSI Mystery Detective - Jungle Juice Fever\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52310720282994,"sku":"8595503","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/mystery-detective-halloween-1-8595503.jpg?v=1792459697"},{"product_id":"fall-csi-mystery-addition-subtraction-worksheets","title":"Fall Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | Who Stole the Colors?","description":"\u003cp\u003eFall CSI math worksheets, fall addition and subtraction practice, and a Halloween-friendly monster line-up for 2nd grade, 3rd grade and 4th grade - all in one printable Mystery Detective pack. Built for September, October and November: the first cool weeks of fall, the run-up to Halloween, and Thanksgiving week before the break. Completely no prep - just print and go.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Who Stole the Colors?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe leaves around school are turning from green to yellow to orange to brown, and then falling off the trees. Someone is stealing the color. Your class takes the case, works the clues, and crosses suspects off the chart until one name is left standing. Every clue answers a different question about the culprit, so the list narrows a little further with each page they finish.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eAdding 1-digit numbers to 3-digit numbers along a leaf-trail path\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction word problems, including money and change\u003c\/li\u003e\n  \u003cli\u003eDeciding whether a given equation is right or wrong - error spotting, not just answering\u003c\/li\u003e\n  \u003cli\u003eOdd and even numbers as a way of narrowing the suspects\u003c\/li\u003e\n  \u003cli\u003eReading a suspect chart and matching your answers against it\u003c\/li\u003e\n  \u003cli\u003eAnswer keys included\u003c\/li\u003e\n  \u003cli\u003eColor and black-and-white versions, so it prints clean on any copier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA Mystery Detective case is a printable escape room with no locks and no boxes. Students solve a page of math, use what the answer tells them to rule suspects out, and keep going until one suspect is left. The pages check themselves - a wrong answer stops the case in its tracks, so students go back and find their own slip before it ever reaches your marking pile.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFall math centers\u003c\/li\u003e\n  \u003cli\u003eThe lead-up to Halloween, and Halloween week itself\u003c\/li\u003e\n  \u003cli\u003eThanksgiving week and the days before the break\u003c\/li\u003e\n  \u003cli\u003eSeptember, October and November math review\u003c\/li\u003e\n  \u003cli\u003eSub plans and emergency cover\u003c\/li\u003e\n  \u003cli\u003eEarly finishers and morning work\u003c\/li\u003e\n  \u003cli\u003eHomework, small groups and partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 2nd grade, 3rd grade and 4th grade, where 3-digit addition and regrouping sit right on the standards. It also works as review for a 5th grader who still needs practice carrying across columns, and as an extension for a confident 1st grader who is ready to be stretched.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNo prep at all - print it and hand it out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, so you are not hunting through thirty pages for one slipped digit\u003c\/li\u003e\n  \u003cli\u003eThe suspect chart gives every student a reason to go back and check their own working\u003c\/li\u003e\n  \u003cli\u003eEvery clue uses a different puzzle shape, so the pack holds attention to the last page\u003c\/li\u003e\n  \u003cli\u003eQuiet, focused engagement in a week when the classroom is anything but\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more Mystery Detective cases, seasonal math activities, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52310872654194,"sku":"8569960","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/fall-mystery-detective-1-8569960.jpg?v=1792459542"},{"product_id":"skip-counting-place-value-csi-mystery-grades-1-2","title":"Skip Counting \u0026 Place Value CSI Mystery Worksheets | Grades 1–3 | The Missing Burger","description":"\u003cp\u003eFall skip counting, missing numbers and place value CSI math worksheets for October, wrapped in a CSI Mystery Detective case called The Missing Burger. The number sense work behind it - counting on in steps, reading base ten blocks, ordering three-digit numbers - is pitched at 2nd grade and 3rd grade, with fill in the missing number pages that reach past 100. Color and black-and-white versions print clean on any copier, with nothing to cut or assemble, and answer keys are included. A Super Deluxe Mega Burger has vanished from the diner, and every clue your class solves rules out one more table until the mystery is closed and the culprit found.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Missing Burger\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYou are at your local diner with your best friend. You have both ordered, and you are waiting on the Super Deluxe Mega Burger. Ten minutes later a very worried waitress comes over, because the burger has gone. Your class takes the case, and each clue narrows down the table it went to.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSkip counting and completing number sequences in steps\u003c\/li\u003e\n  \u003cli\u003eReading base ten blocks and naming the number they represent\u003c\/li\u003e\n  \u003cli\u003eOrdering three-digit numbers from smallest to greatest\u003c\/li\u003e\n  \u003cli\u003eMatching numbers across two columns to find the one that fits\u003c\/li\u003e\n  \u003cli\u003eWorking a clue backwards from the answer to check it holds\u003c\/li\u003e\n  \u003cli\u003eReading a suspect chart and matching your answers against it\u003c\/li\u003e\n  \u003cli\u003eAnswer keys included\u003c\/li\u003e\n  \u003cli\u003eColor and black-and-white versions, so it prints clean on any copier\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable escape room with no locks and no boxes. Students solve a page of math, use what the answer tells them to rule suspects out, and keep going until one suspect is left. The pages check themselves - a wrong answer stops the case in its tracks, so students go back and find their own slip before it ever reaches your marking pile.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA number sense or place value unit, at any point in the year\u003c\/li\u003e\n  \u003cli\u003eThe first weeks back, when counting and number order need refreshing\u003c\/li\u003e\n  \u003cli\u003eMath centers, small groups and partner work\u003c\/li\u003e\n  \u003cli\u003eReview before a test on numbers to 999\u003c\/li\u003e\n  \u003cli\u003eSub plans and emergency cover\u003c\/li\u003e\n  \u003cli\u003eEarly finishers, morning work and homework\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 2nd grade and 3rd grade. The counting and base ten pages give a confident 1st grader a way in, and ordering numbers to 999 still catches out plenty of 4th graders who have never had to slow down and compare hundreds.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNo prep at all - print it and hand it out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, so a miscounted sequence shows up immediately instead of at marking time\u003c\/li\u003e\n  \u003cli\u003eEvery clue uses a different puzzle shape, so the pack holds attention to the last page\u003c\/li\u003e\n  \u003cli\u003eStudents recount to be certain before they cross a name off\u003c\/li\u003e\n  \u003cli\u003eQuiet, focused engagement without a single instruction repeated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective cases, no-prep math worksheets, and detective-themed printables for elementary classrooms.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52324057842034,"sku":"8540606","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/mystery-detective-number-and-place-value-1-8540606.jpg?v=1792460140"},{"product_id":"summer-csi-mystery-addition-subtraction-worksheets","title":"Summer Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | Who Stole Summer?","description":"\u003cp\u003eSummer CSI math worksheets for 3 digit addition and subtraction with regrouping, wrapped in a CSI Mystery Detective case for June and July. The mystery is Who Stole Summer: the vacation, the beach days and the pool afternoons vanished overnight, and your 2nd grade, 3rd grade and 4th grade students have to work out who took them. Subtraction with regrouping from 100, three digit addition with regrouping and addition and subtraction word problems each fill in one more detail about the culprit, until only one suspect fits. Every page comes in color and black-and-white with answer keys, so it is no prep for summer school in July or a June addition and subtraction review.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Who Stole Summer?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSummer is gone. The vacation, the beach days, the long afternoons at the pool with friends - all of it vanished overnight, and nobody at home can explain it. There is only one thing left to do: take the case. Your students work the clues one at a time, and every correct answer fills in another detail about the culprit - what they look like, how old they are, and which season they love most. Get the math right and the description narrows until only one suspect can have done it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSubtraction from 100 with two-digit numbers, checked against a right-or-wrong tally\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping, decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003e3-digit plus single-digit addition solved by matching each problem to its answer\u003c\/li\u003e\n  \u003cli\u003eA running addition trail where the final total decides the answer through odd and even\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction word problems set in everyday summer situations\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt is an escape-room-style activity that runs on math instead of padlocks. Each page hands your students a question about the villain and a set of problems that answer it. They solve, they cross suspects off, and the case closes when one name is left standing. The deduction gives the practice a point - students check their own work carefully, because a careless answer sends the whole investigation the wrong way.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n  \u003cli\u003eSummer school and holiday review packets\u003c\/li\u003e\n  \u003cli\u003eThe first weeks back at school, to see what came back with them\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade, 3rd grade and 4th grade. Second graders find the 3-digit addition with regrouping a genuine stretch and often work it in pairs; third and fourth graders can usually run the case on their own. It also gives 5th grade students who need addition and subtraction review something that does not look like remedial work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eRepeatable practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52324094640498,"sku":"8372297","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/summer-addition-and-subtraction-mystery-detective-1-8372297.jpg?v=1792460143"},{"product_id":"summer-addition-subtraction-csi-mystery-worksheets","title":"Summer Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Skates","description":"\u003cp\u003e3rd grade and 4th grade 3 digit addition CSI math worksheets, dressed as a back to school and summer review CSI Mystery Detective case that earns a second run in March when addition needs tightening before testing. 4 digit addition is in there too, so it doubles as 4th grade math review. Nothing to prepare beyond pressing print: color and black and white versions, answer keys for every page. The case is The Missing Roller Skates - in the bag last night, gone this morning - and your students have until the rink opens to solve the mystery. Answers pick letters off a map and settle an odd-or-even trail, ruling out a suspect each time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Missing Roller Skates\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYour best friend has invited you to the rink and you have not been skating in years. You get dressed, find your bag, and the skates are not in it. They were there last night. Somebody has been through the bag between then and now, and the whole afternoon depends on your students working out who it was before the session starts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3 digit and 4 digit addition, with answers used to pick letters off a map\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eAddition decoded through a letter key to reveal the next part of the description\u003c\/li\u003e\n  \u003cli\u003eAddition along a path where an odd or even final total decides the answer\u003c\/li\u003e\n  \u003cli\u003eA suspect line-up that narrows every time a clue is solved\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEach page asks one question about the thief - the gender, the age, the height, the shoe size - and hands your students the addition that answers it. They solve, they cross a name off the line-up, and the case closes when one suspect is left. A careless answer sends the description the wrong way, so students check their own work properly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eEnd of year review in June and July, when attention is thin\u003c\/li\u003e\n  \u003cli\u003eSummer school and holiday review packets\u003c\/li\u003e\n  \u003cli\u003eThe first weeks back at school in August and September\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade and 4th grade. Third graders usually pair up on the four-digit pages; fourth graders run the whole case independently inside a lesson. It also suits 2nd grade students who are ahead on addition and want something with more thinking in it than extra practice.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eAddition practice students will actually finish\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52324294689138,"sku":"8336949","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/summer-mystery-detective-addition-and-subtraction-1-8336949.jpg?v=1792460144"},{"product_id":"3-digit-addition-subtraction-csi-mystery-haunted-hallway","title":"3-Digit Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Haunted Hallway","description":"\u003cp\u003eOctober CSI math worksheets with a Halloween case to crack, this CSI Mystery Detective investigation runs on 3 digit addition and subtraction with regrouping from first clue to last. All week things have been going missing from the hallway lockers, and the only useful evidence is a set of numbers. It suits 3rd grade, 4th grade and 5th grade as fun subtraction worksheets or a Halloween math activity, and the routine is print, hand out, done. Students decode sums through a letter key, color the correct arrow, match the locker to its level and add along a path where an odd or even total decides the answer, until the mystery is down to one culprit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Haunted Hallway\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eAll week teachers have been getting the same report: things are going missing from the lockers in the hallway. Students have been blaming each other, loudly, and nobody has got anywhere near the truth. The lockers are on two levels, there are a lot of them, and the only useful evidence is a set of numbers. Work them out and the right locker - and the right culprit - is the one left standing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e3 digit subtraction decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eSubtraction problems used to color the correct arrow to the next clue\u003c\/li\u003e\n  \u003cli\u003eA matching page that identifies which level the locker is on\u003c\/li\u003e\n  \u003cli\u003e3 digit addition decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eAddition along a path where an odd or even final total decides the answer\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt plays like a math escape room on paper. Each page asks one question about the locker and the person using it, and hands your students the problems that answer it. They solve, they cross suspects off, and the case closes when one is left - no locks, no props, nothing to reset between classes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003e3 digit addition and subtraction review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders usually pair up on the four-digit totals; fourth and fifth graders run the case independently. It also suits 6th grade students who need addition and subtraction review without it feeling like going backwards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA Halloween activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52334803911026,"sku":"7296432","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/haunted-hallway-halloween-csi-mystery-detective-grades-3-5-7296432.jpg?v=1792459156"},{"product_id":"adding-subtracting-integers-csi-mystery-monster-mummies","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 5–9 | Monster Mummy","description":"\u003cp\u003eOctober is when adding and subtracting integers gets its best hearing in middle school, and this CSI Mystery Detective case gives grades 6, 7, 8 and 9 an ancient Egypt tomb to work it in. Positive and negative numbers, subtracting integers and adding negative numbers fill the CSI math worksheets, with answer keys for every page and color and black-and-white versions ready to print. Something in the sealed tomb is awake, and only the integers on the walls can say what. Students carry a running total along a path, color the correct arrow forward and decode two secret messages, each answer removing a suspect until the mystery has a name.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Monster Mummy\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYour students are with an archaeological team that has found a sealed tomb and gone in anyway. In the first chamber there is a cup, glowing faintly, with two snakes for handles. Everything that has happened since started there. Something in this tomb is awake now, and the only way to say what it is - how tall, how fast, how bad it smells - is to work the integers on the walls.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding and subtracting integers along a path where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003ePositive and negative number problems that color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eDecoding a secret message from integer answers\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eA second decoding page built on adding and subtracting negative numbers\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEach page asks one question about the mummy and hands your students the integer problems that answer it. They solve, they eliminate, and the case closes when one suspect is left. Sign errors surface immediately, because a wrong sign breaks the message and the description stops making sense.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eInteger review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eAn ancient Egypt topic, alongside your history and reading work\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for grade 6 and grade 7, and it holds up for grade 8 and grade 9 students who need integer review. Sixth graders meeting negative numbers for the first time usually work it in pairs; older students run it independently and finish inside a lesson.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong sign breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA middle school activity that is not babyish\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52334869676402,"sku":"6955229","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/ancient-egypt-integers-csi-mystery-detective-grades-6-9-6955229.jpg?v=1792459155"},{"product_id":"csi-mystery-3-digit-addition-multiplication-division-2nd-4th-grade","title":"Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–5 | The Missing Stationery","description":"\u003cp\u003eAugust and September back to school CSI math worksheets: addition and subtraction with two-digit and three-digit numbers, some early multiplication, and a CSI Mystery Detective story to carry it. On the first morning back, 2nd grade and 3rd grade students find every pencil and crayon gone, and whoever cleared the room left footprints and enough math behind to be named. It is back to school math with a purpose, and the mystery gives a new class a shared job while you learn their names. Print and go, nothing to prepare. Students add along a crayon trail, decode sums with a letter key and color the right arrow forward, losing a suspect each time. Answer keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Missing Stationery\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThere has been an emergency at school. Your students walk into class on the first morning back and every last piece of stationery is gone - pencils, crayons, scissors, the lot. Somebody came in over the holidays while the building was empty and cleared the room out. They left footprints, though, and enough math behind to say exactly who they were.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAddition along a crayon trail where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eThree-digit addition decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eMultiplication used to color the correct circle and arrow forward\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt is a printable CSI Mystery Detective case: a back to school escape room on paper, with no locks, no apps and nothing to set up. Students work a page of back to school math worksheets, and every answer they get right crosses another suspect off the line-up until one name is left. Detective activities like this one run themselves, because a careless answer sends the description the wrong way and students go back over their own work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe first days back at school, when you want the math to feel like fun\u003c\/li\u003e\n  \u003cli\u003eSeeing what came back with them after the summer\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade and 3rd grade. Second graders usually work the three-digit addition in pairs; third graders can run the case independently inside a lesson. It also suits 4th grade students who need addition and subtraction review in a form that does not feel like going back a year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA first-week activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52335128248690,"sku":"5799886","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/back-to-school-csi-mystery-detective-grades-2-3-first-week-5799886.jpg?v=1792459172"},{"product_id":"addition-subtraction-multiplication-csi-mystery-presidents-day","title":"Presidents Day CSI Mystery Worksheets | Grades 2–5 | The Missing Hat","description":"\u003cp\u003eFebruary Presidents Day CSI math worksheets that play out as a CSI Mystery Detective case on three-digit addition and multiplication facts, with a missing stovepipe hat and a speech due in an hour. Aimed at 3rd grade, 4th grade and 5th grade, it is a multiplication mystery for the week around Lincoln's birthday and a handy snow day math option too. Both color and black-and-white pages are included and nothing needs cutting. Students follow a trail of stars where an odd or even total settles the clue, decode addition answers through a letter key, and circle letters on a multiplication grid to unscramble the final name, sending one suspect home with every right answer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Help! The Missing Hat\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eToday is the day of the big speech. He is up early, into the favorite suit, breakfast made, teeth cleaned, one last run through the words. He is ready. And the hat - the one everybody would recognize from a hundred yards - is not on the stand where it lives. The speech is in an hour, and somebody in this house has taken it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAddition along a trail of stars where an odd or even total settles the clue\u003c\/li\u003e\n  \u003cli\u003eThree-digit addition decoded through a letter key to give a shoe size\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eMultiplication used to color the correct circle and arrow forward\u003c\/li\u003e\n  \u003cli\u003eCircling letters on a grid using multiplication answers, then unscrambling them\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable investigation your class solves with math. It runs like a math escape room - no locks, no app, no prep - except that instead of opening a box, every correct answer rules one suspect out of the line-up until a single name is left. That is what separates detective activities from ordinary math worksheets: the arithmetic has to be right or the case will not close, so students check their own work. It is a math activity that carries a whole lesson, and it works just as well in math centers or as a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePresidents Day in February, alongside your history work\u003c\/li\u003e\n  \u003cli\u003eThe days around a holiday, when you still want real math done\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders may want their times tables to hand for the grid page; fourth and fifth graders run the case independently inside a lesson. It also suits 2nd grade students who are ahead and want something with more thinking in it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA Presidents Day activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52346750501234,"sku":"5246705","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/presidents-day-csi-mystery-detective-february-grades-3-5-5246705.jpg?v=1792460005"},{"product_id":"area-perimeter-csi-mystery-may-4th","title":"Area \u0026 Perimeter CSI Mystery Worksheets | Grades 3–6 | Geometry Wars","description":"\u003cp\u003eCSI Mystery Detective meets area and perimeter in this April geometry case, with CSI math worksheets on the perimeter of compound shapes, missing side lengths and the area of larger shapes. Pitched at 3rd grade, 4th grade and 5th grade, it is an area and perimeter mystery that also does the job as 4th grade math review. Color and black-and-white versions are both included, with answer keys for every page, so there is nothing to prepare. A key that opens something nobody will name has vanished from the academy. Students check answers for errors, work backwards from a known perimeter and follow a color-the-arrow trail, ruling out a suspect with each clue.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Key\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThere is a key that opens something nobody will name, and it has gone missing from the academy. Nobody saw it go. What is left behind is a set of measurements - the size of the space it sat in, the shape of the mount it came off - and the only way to identify the key is to work them out. Get the area and perimeter right and the description assembles itself.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eChecking area and perimeter answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eCalculating the perimeter of rectangles and compound shapes\u003c\/li\u003e\n  \u003cli\u003eWorking backwards from a known perimeter to find a missing side length\u003c\/li\u003e\n  \u003cli\u003eCalculating the area of shapes, including larger multi-digit answers\u003c\/li\u003e\n  \u003cli\u003eA color-the-arrow trail through area problems to reach the final clue\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case turns a page of math into evidence. Students solve, and each correct answer removes one suspect from the line-up until a single name is left holding it. There is nothing to unlock, download or prepare - it is a math escape room made of paper. Detective activities also police themselves, which ordinary math worksheets never do: an error leaves a culprit nobody can arrest, so the class rechecks. A math activity that carries a lesson, a center rotation, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eArea and perimeter review before or after a geometry unit\u003c\/li\u003e\n  \u003cli\u003eA May geometry week, when you want something with a story attached\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders usually need support on the missing-side pages and pair up for them; fourth and fifth graders run the case independently. It also gives 6th grade students who need area and perimeter review something worth doing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eGeometry practice with a purpose behind every calculation\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52346907328882,"sku":"5149806","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/area-and-perimeter-csi-mystery-detective-geometry-grades-3-5-5149806.jpg?v=1792459386"},{"product_id":"valentines-day-csi-mystery-grades-3-5","title":"Valentine’s Day CSI Mystery Worksheets | Grades 2–5 | Love Bug Wizard","description":"\u003cp\u003eValentines Day math addition and multiplication CSI Mystery worksheets for February - a no prep CSI Mystery Detective case for 3rd grade, 4th grade and 5th grade, built on 3 digit addition and the multiplication facts. The math worksheets come in color and black-and-white with answer keys, and every correct answer rules one suspect out of the line-up until one name is left. The case: the whole school has gone kind - too kind, all at once - so somebody has been through it with a wand, and the class has to work out which wizard. It plays like a paper-based escape room: a trail of hearts, a letter key to decode, a grid to unscramble.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Help! The Love Bugs\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt is Valentines Day. Not your favorite day of the year, but there is something to be said for a building full of people being unusually nice to each other. Random acts of kindness everywhere. Then it tips over into something else - too nice, all at once, all day - and it becomes clear somebody has been at the school with a wand. Your students need to work out which wizard.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAddition along a trail of hearts where an odd or even total settles the clue\u003c\/li\u003e\n  \u003cli\u003eThree-digit addition decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eCircling letters on a grid using multiplication answers, then unscrambling them\u003c\/li\u003e\n  \u003cli\u003eMultiplication used to color the correct heart and arrow forward\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable investigation your class solves with math. It runs like a math escape room with the locks taken out - no app, no boxes, nothing to prepare - and rather than opening something, every correct answer rules one suspect out of the line-up until a single name is left. That is the difference between detective activities and ordinary math worksheets: the arithmetic decides the outcome, so students check their own work first. As a math activity it fills a lesson, a center, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eValentines Day in February, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eAddition and multiplication review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders may want their times tables to hand for the grid page; fourth and fifth graders run the case independently inside a lesson. It also suits 2nd grade students who are ahead and want something with more thinking in it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA Valentines activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52347043217778,"sku":"5146409","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/valentines-day-csi-mystery-detective-february-grades-3-5-5146409.jpg?v=1792460272"},{"product_id":"christmas-csi-mystery-grades-2-5","title":"Christmas CSI Mystery Worksheets | Grades 2–5 | Who Stole the Sleigh?","description":"\u003cp\u003eDecember is when Christmas addition and subtraction CSI math worksheets earn their keep, and Help! Santa's Sleigh gives them a crime scene. This Christmas CSI Mystery Detective case runs on two-digit and three-digit addition and subtraction with regrouping, plus a taste of multiplication, wrapped in a North Pole mystery for 2nd grade and 3rd grade. Helpers on double shifts, a record year for good children, and days before Christmas somebody at the Pole sabotaged the sleigh. Each correct answer strikes a suspect off the line-up until one remains, from a trail of presents to a decoration colored by the right product. Print in color or black and white, answer keys included, no prep.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Help! Santa's Sleigh\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt has been another long year at the North Pole, and a record number of children have somehow managed to stay good the whole way through. The helpers have been working double shifts to keep up. And now, days out, something has happened to the sleigh. Somebody at the Pole is responsible, and your students have to work out which one before the whole thing is called off.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAddition along a trail of presents where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003eReading letters off a map with a key to decode a message\u003c\/li\u003e\n  \u003cli\u003eThree-digit addition decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eMultiplication used to color the correct decoration and arrow forward\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable investigation your class solves with math. It runs like a math escape room with the locks taken out - no app, no boxes, nothing to prepare - and instead of opening something, every correct answer rules one suspect out of the line-up until a single name is left. That is the difference between detective activities and ordinary math worksheets: the arithmetic decides the outcome, so students check their own work first. As a math activity it fills a lesson, a center, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThe last weeks of December, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eChristmas parties and the days either side of them\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade and 3rd grade. Second graders usually pair up on the three-digit addition; third graders run the case independently. It also suits 4th grade students who need addition and subtraction review in a form that does not look like going back a year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA December activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52347057078642,"sku":"5070687","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/christmas-santas-sleigh-csi-mystery-detective-grades-2-3-5070687.jpg?v=1792459386"},{"product_id":"thanksgiving-csi-mystery-grades-2-5","title":"Thanksgiving CSI Mystery Worksheets | Grades 2–5 | The Missing Turkey","description":"\u003cp\u003eNovember means Thanksgiving, and this Thanksgiving math pack for 2nd grade and 3rd grade turns the week before the feast into a Thanksgiving mystery worth solving. It is a CSI Mystery Detective case built on two-digit addition and subtraction, with a taste of early multiplication and Thanksgiving subtraction with regrouping along the way. It plays like a paper-based escape room: each correct answer crosses one suspect off the line-up until the guest who raided the table stands alone. Full color and black-and-white turkey CSI math worksheets, answer keys, print and go. Students add along a turkey trail, decode letters from a Thanksgiving map and check worked answers before dinner is served.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Thanksgiving\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThanksgiving is nearly here. Aunts and uncles have flown in from the other side of the country, the table is set, and the whole family is finally in one place. Then something goes missing from the feast. It was someone in this house, or someone who was invited, and your students have until dinner to work out which one of them it was.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAddition along a turkey trail where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003eReading letters off a Thanksgiving map with a key to decode a message\u003c\/li\u003e\n  \u003cli\u003eMultiplication used to color the correct acorn and arrow forward\u003c\/li\u003e\n  \u003cli\u003eTwo-digit addition decoded through a letter key\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is math practice with a culprit at the end of it. The class works the page, each correct answer rules a suspect out, and the case closes on the last name left. It runs like a math escape room with the hardware removed - no locks, no app, no prep. It is far harder to coast through than ordinary math worksheets, because the arithmetic has to hold or nothing lines up. Use it as a full math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThanksgiving week in November, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eThe days before a holiday, when you still want real math done\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade and 3rd grade. Second graders usually work the trail pages in pairs; third graders can run the whole case on their own. It also suits 4th grade students who need addition and subtraction review in a form that does not feel like going back a year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA holiday activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52522795565426,"sku":"5003849","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/the-missing-turkey-thanksgiving-mystery-detective-grades-3-5-5003849.jpg?v=1792460271"},{"product_id":"adding-subtracting-integers-csi-mystery-zombie","title":"Adding \u0026 Subtracting Integers CSI Mystery Worksheets | Grades 6–9 | Zombie Outbreak","description":"\u003cp\u003eHalloween adding and subtracting integers for middle school, grade 6, grade 7, grade 8 and grade 9, in a CSI Mystery Detective case where the zombie outbreak started at school. Positive and negative numbers identify the culprit: how fast it moves, how much it smells and how many brains it gets through come down to integers, and one zombie outside used to be someone your students knew. Math worksheets print in color or black and white with answer keys; October needs only a stapler. Students carry a running total along a path, color the correct arrow, decode secret messages from their answers and rule out suspects until one description fits and the mystery ends.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Run Zombies Run\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe outbreak started at school. Friends, family and teachers have all gone the same way, and the survivors have barricaded themselves into what is left of the building. One of the zombies outside used to be someone your students knew. Working out which one means working the integers - how fast it moves, how much it smells, how many brains it gets through - until only one description fits.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAdding and subtracting integers along a path where the running total settles the clue\u003c\/li\u003e\n  \u003cli\u003ePositive and negative number problems that color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eDecoding a secret message from integer answers\u003c\/li\u003e\n  \u003cli\u003eChecking worked integer problems for errors and tallying the results\u003c\/li\u003e\n  \u003cli\u003eA second decoding page built on adding and subtracting negative numbers\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eStudents are the detectives and math is the only evidence they are handed. That is the whole of a CSI Mystery Detective case: work the page, rule a suspect out with every correct answer, close the case on the last name standing. It runs as a math escape room with no locks, no app and no prep. It is also self-marking in practice, which ordinary math worksheets are not - a wrong answer produces a culprit who cannot exist. Use it as a math activity, in math centers, or as a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eInteger review before or after a unit test\u003c\/li\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for grade 6 and grade 7, and it holds up for grade 8 and grade 9 students who need integer review. Sixth graders meeting negative numbers for the first time usually work it in pairs; older students run it independently and finish inside a lesson.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong sign breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA middle school activity that is not babyish\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52522822730098,"sku":"4908270","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/run-zombie-run-adding-subtracting-integers-mystery-detective-4908270.jpg?v=1792459155"},{"product_id":"place-value-skip-counting-csi-mystery","title":"Place Value \u0026 Skip Counting CSI Mystery Worksheets | Grades 2–4 | The Playground Bandit","description":"\u003cp\u003e2nd grade, 3rd grade and 4th grade place value, skip counting and number sequences CSI math worksheets, built into a CSI Mystery Detective case where the Place Value Bandit has scrambled the school playground. The seesaw lifts the heavy end, the hopscotch numbers run in an order nobody recognizes, and the only description of the culprit is the numbers left behind. It doubles as a 3rd grade math or 4th grade math review and suits a March timetable when practice needs a lift. Students finish sequences, skip count through four-digit numbers, compare numbers on the seesaw, and decode letters through a key, crossing off suspects until the mystery is solved. Answer keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Place Value Bandit in the Playground\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe playground has stopped working properly. The seesaw lifts the heaviest person and drops the lightest, the hopscotch numbers run in an order nobody recognizes, and the whole yard has quietly stopped making sense. The Place Value Bandit has been through, and the numbers left behind are the only description of them anyone is going to get.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNumber sequences completed to reveal the letter that matters\u003c\/li\u003e\n  \u003cli\u003eSkip counting patterns running through three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eComparing two numbers on a seesaw to decide which is greater\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eA key used to decode letters into the next piece of the description\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe shape of it is always the same: a crime, a line-up of suspects, and math that decides which of them it cannot be. That is a CSI Mystery Detective case - a math escape room that needs a printer rather than locks, an app or any prep. It beats math worksheets on the same content for one reason: a wrong answer breaks the deduction loudly, so students go back over their own work. It fills a whole lesson, sits in math centers, or works as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePlace value and skip counting review before or after a unit\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade, 3rd grade and 4th grade. Second graders usually pair up for the four-digit sequences; third and fourth graders run it independently. It also suits 5th grade students who need a place value refresher without it feeling like going back a year.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eCounting and place value practice with a point to it\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":52522855334258,"sku":"4858413","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/place-value-bandit-school-playground-mystery-detective-grades-2-4-4858413.jpg?v=1792460003"},{"product_id":"multiplication-division-csi-mystery-zombie-cure","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–7 | The Zombie Cure","description":"\u003cp\u003eAre you looking for multiplication and division worksheets wrapped inside an engaging CSI Mystery Detective? This printable CSI Mystery Detective is a no-prep math activity designed for Grades 3, 4, 5, 6, and 7, and includes CSI math worksheets and activities where students solve multiplication and division problems to uncover clues and eliminate options. Perfect for math centers, back-to-school activities, end-of-year review, early finishers, sub plans, and homeschool math, this resource keeps students focused, motivated, and actively problem-solving.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAbout This CSI Mystery Detective\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA zombie outbreak has occurred, and scientists have developed several possible cures. However, only one cure is correct. Students take on the role of CSI Math Investigators, using multiplication and division clues to gather evidence and eliminate incorrect cure options. With each solved clue, students narrow down the possibilities until the correct zombie cure is revealed.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included in This Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication and division problems (facts up to 12 × 12)\u003c\/li\u003e\n  \u003cli\u003eMultiple CSI-style math clue worksheets\u003c\/li\u003e\n  \u003cli\u003eCure elimination \/ evidence checklist\u003c\/li\u003e\n  \u003cli\u003eClear student instructions\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for all activities\u003c\/li\u003e\n  \u003cli\u003ePrintable PDF format\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePerfect for a Variety of Classrooms \u0026amp; Uses\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMath centers and stations\u003c\/li\u003e\n  \u003cli\u003eBack-to-school math activities\u003c\/li\u003e\n  \u003cli\u003eEnd-of-year math review\u003c\/li\u003e\n  \u003cli\u003eIndependent or partner work\u003c\/li\u003e\n  \u003cli\u003eEarly finisher activities\u003c\/li\u003e\n  \u003cli\u003eSub plans and low-prep days\u003c\/li\u003e\n  \u003cli\u003eHomeschool math lessons\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Level Flexibility\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis CSI Mystery Detective is designed primarily for Grades 4 and 5, but it can also be used successfully with:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eGrade 3 students needing challenge or enrichment\u003c\/li\u003e\n  \u003cli\u003eGrade 6 and 7 students requiring review, intervention, or confidence-building practice\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective is a printable, escape-room-style math activity where students solve math problems to uncover clues and eliminate incorrect options. Instead of locks or digital tools, students rely on math reasoning, logic, and problem-solving to solve the case. These mysteries are engaging, no-prep, and designed to be completed in one class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLove this resource?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to explore more engaging CSI Mystery Detective packs and be the first to hear about new releases, special discounts, and fresh printables for your classroom.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61937765024114,"sku":"15411675","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-and-division-facts-worksheets-mystery-detective-zombie-cure-12x12-15411675.jpg?v=1792459838"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-4-6-halloween-school-witch","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 4–6 | Halloween School Witch","description":"\u003cp\u003eHalloween multiplication and division CSI math worksheets, with rounding and multi-digit addition folded into the clues, make up this CSI Mystery Detective case for October. For 4th grade and 5th grade, it works as a 4th grade math review or as a standalone multiplication and division mystery that students want to finish. Everyone at your school knows the witch stories, but this time the witches left evidence: a hat, a wand, a broom and a pet, and one suspect in the line-up who matches all four. Print it, color or black and white, and the whole case is ready to hand out. Each correct fact rules a suspect out, and answer keys cover every page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The School Witches\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eEveryone at your school knows the stories. The witches come out at night, and the mischief they leave behind is always just deniable enough that nobody can prove anything. Lately it has been getting worse, and this time they have left evidence. Your students have the hat, the wand, the broom and the pet to work with, and one witch out of the line-up that all four descriptions have to match.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eChecking multiplication and division facts for errors and tallying the results\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition running into four-digit and five-digit answers\u003c\/li\u003e\n  \u003cli\u003eTimes table problems that color the correct arrow to the next clue\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction along a path where the final total settles the clue\u003c\/li\u003e\n  \u003cli\u003eRounding a number to find the letter that completes the puzzle\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eGive a class a crime, a suspect list and a page of math worksheets, and you have a CSI Mystery Detective case. The answers do the work: each right one removes a name until only the culprit is left. It is a math escape room in everything but the hardware - no locks, no app, nothing to set up. Detective activities also carry their own marking, because a wrong answer stops the case closing at all. Run it as a math activity, drop it into math centers, or keep it for a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eFact fluency practice that is not another timed test\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 4th grade and 5th grade. Fourth graders usually pair up for the five-digit addition page; fifth graders can run the whole case independently inside a lesson. It also gives 6th grade students whose times tables have gone rusty a way to rebuild them.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA Halloween activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default","offer_id":61945223971186,"sku":"4844674","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/the-school-witches-multiplication-division-mystery-detective-grades-4-5-4844674.jpg?v=1792459855"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-4-6-the-mad-kings-spy","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 4–6 | The Mad King's Spy","description":"\u003cp\u003eCSI Mystery Detective practice for multiplication and division fact fluency, on CSI math worksheets made for February when times tables need to be quick and right. The Mad King is burning through the villages and always knows exactly where to strike, because somebody inside is telling him. Your students have until he arrives to find the spy, and this multiplication and division mystery for 4th grade and 5th grade narrows the description with every correct fact until only one villager fits. It doubles as 4th grade math review, prints in color or black-and-white, and comes with answer keys. Students check facts for errors and color the correct route to the next clue.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Mad King's Spy\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Mad King is coming. He has been burning his way through the villages one after another, and the reason he always knows exactly where to strike is that somebody inside is telling him. There is a spy in the village, and your students have until he arrives to work out who. Every fact they get right narrows the description - height, build, family crest - until only one person in the village fits it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eChecking multiplication and division facts for errors and tallying the results\u003c\/li\u003e\n  \u003cli\u003eMulti-digit addition with three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eTimes table practice used to color the correct route to the next clue\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction along a path where the final total settles the answer\u003c\/li\u003e\n  \u003cli\u003eA matching puzzle where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable whodunit where the answers, not the clues, do the eliminating. Students work the page; each correct answer rules one suspect out; the last name standing is the arrest. Think math escape room with no locks, no batteries and nothing to prepare. Set against ordinary math worksheets it has a check built in - bad arithmetic leaves a description matching nobody - so mistakes surface on their own. Use it as a whole math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFact fluency practice that is not another timed test\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 4th grade and 5th grade. Fourth graders usually pair up for the four-digit addition; fifth graders can run the whole case on their own inside a lesson. It also gives 6th grade students whose times tables have gone rusty a way to rebuild them without it feeling like going backwards.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eFact practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951124701554,"sku":"4822505","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-division-mystery-detective-grades-4-6-mad-kings-spy-4822505.jpg?v=1792459855"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-5-space-moon-mission","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–5 | Space Moon Mission","description":"\u003cp\u003eCSI Mystery Detective work on multiplication and division facts, set on a moon base nobody can account for: Moon Mission is space CSI math worksheets for 3rd grade, 4th grade and 5th grade, timed for September and a fresh run at times tables. No agency admits building the base, and your students are Mission Leader, sent to find whoever is running it. Every corridor forces a choice and only the arithmetic decides it, so each right answer rules a suspect out and the last name standing solves the mystery. Multiplication facts circle letters on a grid and division facts decode the next instruction. Answer keys included, ready to print.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Moon Mission\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThere is a base on the moon that nobody can account for. No agency admits to building it, no records show it going up, and nothing is known about what is inside. Your students are the Moon Mission Leader, and the job is to find whoever is running it. Every corridor forces a choice, and the only thing that decides it correctly is the math.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication facts used to circle letters on a grid and reveal a direction\u003c\/li\u003e\n  \u003cli\u003eDivision facts decoded through a key to uncover the next instruction\u003c\/li\u003e\n  \u003cli\u003eReading letters from a space map with a key to solve a secret message\u003c\/li\u003e\n  \u003cli\u003eTimes table problems that color the correct route past an obstacle\u003c\/li\u003e\n  \u003cli\u003eAddition along a planet trail where the running total settles the distance\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eTake a math escape room, take away the locks and the app, and put a line-up of suspects where they were: that is a CSI Mystery Detective case. Students solve, each right answer clears one name, and the last standing is the arrest. Nothing is cut, prepared or installed. A practice page lets a class drift; detective activities do not, because one wrong answer leaves a description matching nobody. It works as a full math activity, in math centers, or as math worksheets to hand a substitute.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTimes table and division fact practice that is not a timed test\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eA space or STEM topic week, alongside science work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade, 4th grade and 5th grade. Third graders may want their times tables to hand for the later pages; fourth and fifth graders usually run the whole case independently inside a lesson.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eFact fluency practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951183585650,"sku":"4571840","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-division-mystery-detective-grades-3-5-space-moon-mission-4571840.jpg?v=1792459713"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-5-zombie-attack","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–5 | Zombie Attack","description":"\u003cp\u003eOctober is when this zombie Halloween 3rd grade math review earns its keep: multiplication and division facts, multi-digit addition and rounding to the nearest ten, run as one CSI Mystery Detective case. It plays as a multiplication and division mystery rather than a drill, so several 3rd grade math standards get covered at once. Someone yells RUN, the school grounds are overrun, and the first zombie is still out there somewhere. The CSI math worksheets come in color and black and white and need no setup beyond printing. Students color the right arrow and tally worked problems, ruling out a suspect each time, with answer keys for every page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Zombie Attack\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSomeone yells RUN, and then screams. Your students look out of the classroom window and the school grounds are already gone - the field, the car park, the front steps, all of it overrun. It started with one of them, and the first zombie is still out there somewhere. Work the math and the description narrows, clue by clue, until only one suspect fits it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eDivision facts used to color the correct arrow to the next clue\u003c\/li\u003e\n  \u003cli\u003eAddition with three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eRounding to the nearest ten to shade the right answer\u003c\/li\u003e\n  \u003cli\u003eA final multi-step problem where the answer is the clue itself\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable whodunit in which the answers, not the clues, do the eliminating. Students work the page; every correct answer rules one suspect out; the last name standing is the arrest. Think math escape room with nothing to unlock and nothing to set up. Against ordinary math worksheets it has a built-in check - bad arithmetic leaves a description matching nobody - so students find their own mistakes. It works as a full math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSpiral review across several third grade standards in one sitting\u003c\/li\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade. Second graders can manage it with support on the four-digit addition; fourth graders use it as a quick review of where they have come from. It also suits 4th grade students who need a confidence rebuild across multiplication and division before moving on.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eSeveral standards reviewed in one activity\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951199117682,"sku":"3799849","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/zombie-attack-csi-mystery-detective-grade-3-review-multiplication-3799849.jpg?v=1792459838"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-5-alien-invasion","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–5 | Alien Invasion","description":"\u003cp\u003e3rd grade and 4th grade math review drives these Alien Invasion CSI math worksheets: multiplication facts, rounding to the nearest ten and multi-digit addition in one CSI Mystery Detective case. It slots into January as winter math activities to get the class back into gear. The invaders read our digital numbers faster than we do, so the last defense is math worked by hand until it names the alien in charge. Both color and black-and-white versions are included, and the only prep is the printer. Students check answers, crack a code chart and trace the right path, ruling out a suspect per correct answer until the mystery ends on one alien, answer keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Alien Invasion\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt was only ever a matter of time before they arrived, and our own technology made it easy for them. Every digital system we built runs on numbers, and the invaders learned to read them faster than we did. Now the only defence left is the one thing they did not expect anyone to still do by hand: work the math out properly, on paper, and use it to find the one alien behind the whole operation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eChecking answers for errors and tallying the results to settle a clue\u003c\/li\u003e\n  \u003cli\u003eMulti-step problems where the last answer unlocks a code chart\u003c\/li\u003e\n  \u003cli\u003eAddition with three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eRounding to the nearest ten, shading the correct answer to reveal letters\u003c\/li\u003e\n  \u003cli\u003eMultiplication facts used to trace the right path to the final clue\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYour students get a crime, a line-up and a page of math worksheets - nothing else. The answers do the eliminating: one correct answer, one suspect gone, until only the culprit is left. That is a CSI Mystery Detective case, and it works like a math escape room without the locks or the login. It also marks itself, which a practice page never does, because a wrong answer leaves a description matching nobody. Run it as a whole math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSpiral math review across multiplication, addition and rounding in one sitting\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks, to see what came back with them\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade and 4th grade. Third graders will find the four-digit addition a stretch and often pair up for it; fourth graders can usually run the whole case on their own. It also gives 5th grade students who need multiplication and rounding review something worth doing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eSeveral math skills reviewed in one activity rather than one skill drilled\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951204786546,"sku":"3789957","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/alien-invasion-mystery-detective-multiplication-division-grades-3-4-3789957.jpg?v=1792459713"},{"product_id":"addition-subtraction-csi-mystery-worksheets-grades-2-3-alien-invasion","title":"Addition \u0026 Subtraction CSI Mystery Worksheets | Grades 2–3 | Alien Invasion","description":"\u003cp\u003eCSI Mystery Detective goes interplanetary: an alien invasion that 2nd grade and 3rd grade students solve with addition, subtraction and rounding, where only correct answers reveal which alien is behind it. It begins as an ordinary September school day with a dot growing bigger on the horizon, and ends with students working two-digit and three-digit addition, rounding to the nearest ten and cracking a number sequence to shrink the suspect line-up. These CSI math worksheets come in full color and black and white with answer keys, ready the moment they leave the printer. Students spot wrong answers, keep a tally, follow linked clues and cross off suspects until one alien remains in the mystery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Alien Invasion\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIt starts as an ordinary school day. Your students are at their desks, looking out at a calm sky, when a tiny dot appears on the horizon and starts getting bigger. By the time anyone thinks to shout, it is close enough to see clearly, and the school day is over. Somewhere out there is one alien responsible for all of this, and the only way to identify it is to work the math and narrow the field.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSpotting correct and incorrect answers and marking them off against a tally\u003c\/li\u003e\n  \u003cli\u003eTwo-digit and three-digit addition worked through a chain of linked clues\u003c\/li\u003e\n  \u003cli\u003eRounding numbers to the nearest ten to shade the right answer\u003c\/li\u003e\n  \u003cli\u003eA number sequence puzzle that builds to one final figure\u003c\/li\u003e\n  \u003cli\u003eA suspect line-up that narrows every time a clue is solved\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is a printable investigation your class solves with math. It runs like a math escape room with the locks taken out - no app, no props, no prep - and rather than opening a box, every correct answer rules one suspect out of the line-up until a single name is left. That is the difference between detective activities and ordinary math worksheets: the arithmetic decides the outcome, so students check their own work before they hand it in. As a math activity it fills a lesson, a center, or a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBack-to-school weeks, when you want the math to feel like fun rather than testing\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n  \u003cli\u003eWhole-class detective sessions, small groups or partner work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 2nd grade and 3rd grade. Second graders usually work it in pairs and take their time over the three-digit addition; third graders can run the case independently and finish inside a lesson. It also suits 4th grade students who need addition, subtraction and rounding review in a form that does not look like remedial work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eRepeatable practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951206228338,"sku":"3807824","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/alien-invasion-csi-mystery-detective-addition-subtraction-grades-2-3-3807824.jpg?v=1792459155"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-5-mission-to-mars","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–5 | Mission to Mars","description":"\u003cp\u003e3rd grade and 4th grade multiplication and division CSI math worksheets on a mission to Mars: a CSI Mystery Detective case that lands in November and doubles as 4th grade math review. The Mars Space Agency has a team on the surface building a base, and your students are Team Leader, so every call is theirs: which way to turn, and how far to walk before the air runs short. Get the facts right and the team comes home. Every correct answer rules one suspect out, and the last name left closes the mystery. Times tables color the safe arrow and division facts decode the next instruction. Answer keys and black-and-white pages included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Mission to Mars\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Mars Space Agency has landed a team on the surface to build a base and start looking for life, and your students are the mission Team Leader. That means every decision is theirs: which way to turn, whether to go over the trap or around it, how far to walk before the air runs short. Get the math right and the team gets home. Get it wrong and they are still out there.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUsing a key to read letters off a space map and decode a message\u003c\/li\u003e\n  \u003cli\u003eAddition along a planet trail where the running total decides the route\u003c\/li\u003e\n  \u003cli\u003eDivision facts decoded through a key to reveal the next instruction\u003c\/li\u003e\n  \u003cli\u003eMultiplication facts used to color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eA letter grid circled by multiplication answers, then unscrambled\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is math practice with a culprit at the end of it. Students work the page, every correct answer rules a suspect out, and the case closes when one name is left. It runs like a math escape room stripped of the props - no locks, no app, no prep - and it is much harder to coast through than ordinary math worksheets, because the arithmetic has to hold or nothing lines up. Run it as a math activity, in math centers, or as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTimes table and division fact practice that is not a timed test\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eA space or STEM topic week, alongside science work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade and 4th grade. Third graders may need their times tables to hand for the later pages; fourth graders usually run it independently. It also gives 5th grade students who need multiplication and division fact review something with a point to it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eFact fluency practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951207702898,"sku":"4700595","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/multiplication-division-mystery-detective-mission-to-mars-grades-3-5-4700595.jpg?v=1792459713"},{"product_id":"addition-subtraction-within-100-csi-mystery-worksheets-grades-2-3-space-mission","title":"Addition \u0026 Subtraction Within 100 CSI Mystery Worksheets | Grades 2–3 | Space Mission","description":"\u003cp\u003eCSI Mystery Detective work on multiplication and division facts, aboard an unidentified object orbiting Jupiter: Space Mission is a set of CSI math worksheets that 3rd grade and 4th grade students will treat like a real assignment. The Space Agency has had no reply, so a team is going in, and every corridor forces a choice only a times table or a division fact can settle. That makes it an August option for the first weeks back, when multiplication and division need dusting off. Students color the correct star, follow a planet trail, decode a message off a space map, and check worked answers, closing the mystery one fact at a time. Answer keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Space Mission\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Space Agency has found something in orbit around Jupiter that should not be there. Every attempt at communication has gone unanswered, so a team has been sent aboard, and your students are leading it. The object is dark, the layout makes no sense, and every corridor forces a choice. The only reliable guide is the math.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication facts used to color the correct star and route onward\u003c\/li\u003e\n  \u003cli\u003eAddition along a planet trail where the running total decides the way\u003c\/li\u003e\n  \u003cli\u003eReading letters off a space map with a key to solve a secret message\u003c\/li\u003e\n  \u003cli\u003eDivision facts decoded through a key to reveal the next instruction\u003c\/li\u003e\n  \u003cli\u003eChecking worked answers for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mystery Detective case is what a math escape room becomes when the locks come off and the deduction stays. Students solve, strike a name off the line-up, and keep narrowing until one suspect is left. Nothing to cut, nothing to install, nothing to prepare. Unlike ordinary math worksheets it cannot be drifted through, because an error leaves more than one suspect standing and the class sees it immediately. A math activity that fills a lesson, suits math centers, and works as detective activities for early finishers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTimes table and division fact practice that is not a timed test\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eA space or STEM topic week, alongside science work\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade and 4th grade. Third graders may want their times tables to hand for the later pages; fourth graders usually run the whole case independently. It also gives 5th grade students who need multiplication and division fact review something with a point to it.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eFact fluency practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951208882546,"sku":"4735817","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/addition-subtraction-within-100-mystery-detective-space-mission-grades-2-3-4735817.jpg?v=1792459386"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-6-the-missing-teacher","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–6 | The Missing Teacher","description":"\u003cp\u003eAre you looking for a \u003cstrong\u003efun CSI Mystery Detective math case\u003c\/strong\u003e to engage your students in \u003cstrong\u003emultiplication and division\u003c\/strong\u003e? Then these math activities are for you. Designed to be used at any time during the year, but perfect for an end-of-the-year worksheet and a back-to-school activity at the start of the school year.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCapture your students' attention with this fun \u003cstrong\u003eCSI Mystery Detective\u003c\/strong\u003e math activity by guiding them to solve problems and puzzles. Students narrow down the possible options by completing the activities and marking them off until one person is left. Who is the missing teacher?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis case includes multiplication and division problems up to their 12 times table. Answers are included\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eMystery Detective cases are an independent escape room or crack-the-code type of fun math activity where students identify suspects with puzzles and word problems instead of using locks. This mystery is perfect for the start of the year with back-to-school activities, but can also be used all year round and after term breaks including summer, winter, fall, and spring breaks.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEnjoy and please remember to follow me by clicking the following link to find my latest resources and receive discounts.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eClick to follow me\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThank you\u003c\/p\u003e\n\u003cp\u003eKiwiland\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951261835634,"sku":"3627047","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/the-missing-teacher-mystery-detective-multiplication-division-12s-3627047.jpg?v=1792459837"},{"product_id":"multiplication-division-csi-mystery-worksheets-grades-3-5-zombie-raid","title":"Multiplication \u0026 Division CSI Mystery Worksheets | Grades 3–5 | Zombie Raid","description":"\u003cp\u003eHalloween multiplication and division CSI math worksheets with a zombie on the loose: Zombie Raid is a CSI Mystery Detective case for October, plus multi-digit addition and subtraction. Something in the cemetery took the dare nobody takes, and came out. The mystery for 4th grade and 5th grade is which zombie, and its eye color, the age it died and the rest of the description surface one problem at a time. Each correct answer strikes a suspect off the line-up, which is why the work gets checked. Color and black-and-white pages, answer keys, print and go. Students color the correct arrow and follow a path to the final total.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: Zombie Raid\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eOn the paper round you always pedal a bit faster past the cemetery. Everyone does. Your friends dare each other to cut through it and nobody ever takes the dare. Today something took it the other way, and came out. Your students have the eye color, the age it died and the rest of the description to work out, one problem at a time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMultiplication used to color the correct arrow to the next clue\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eAddition with three-digit and four-digit numbers\u003c\/li\u003e\n  \u003cli\u003eSubtraction with large multi-digit numbers\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction along a path where the final total settles the clue\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eTake a math escape room, remove the locks and the app, and put a suspect list in their place: that is a CSI Mystery Detective case. Students solve the page, each right answer clears one name, and the last one standing is the arrest. Nothing is prepared, cut or installed. Ordinary math worksheets let a class coast; detective activities do not, because a single wrong answer leaves a description matching nobody. It works as a math activity, in math centers, or as something to hand a substitute.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHalloween week in October, when a normal worksheet will not hold them\u003c\/li\u003e\n  \u003cli\u003eMultiplication and division review before or after a unit\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eEnd of year review, when attention is thin and the work still has to happen\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 4th grade and 5th grade. Fourth graders usually pair up on the four-digit subtraction; fifth graders run the case independently. It also gives 6th grade students who need multiplication and division review something worth doing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong answer breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eA Halloween activity that still does real math\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951261868402,"sku":"3835041","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/zombie-raid-csi-mystery-detective-multiplication-division-grade-4-3835041.jpg?v=1792459837"},{"product_id":"multiplication-division-facts-csi-mystery-worksheets-grades-2-4-mad-scientist-2-5","title":"Multiplication \u0026 Division Facts CSI Mystery Worksheets | Grades 2–4 | Mad Scientist (×2 \u0026 ×5)","description":"\u003cp\u003eMultiplication and division facts from the 2 and 5 times tables run this CSI Mystery Detective case, built as 2nd grade and 3rd grade CSI math worksheets for August, when times table practice should not feel like a timed test. The school is empty, a smell drifts down the corridor, and the Mad Scientist has been in. The only way to undo it is to brew the antidote, and every ingredient depends on a correct fact. Print in color or black and white and hand it out. Students color the right arrow forward, check worked facts for errors, and decode division answers into ingredients, ruling out a suspect each time. Answer keys cover the full mystery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Mad Scientist\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eYour students arrive at school expecting the usual noise and find none of it. The office is empty. The corridors are empty. Every classroom is empty, and there is a smell coming from somewhere that no school should ever produce. The Mad Scientist has been in, and the only way to undo what has been done is to brew the antidote - which means getting every single ingredient right.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2 and 5 times table multiplication used to color the correct arrow forward\u003c\/li\u003e\n  \u003cli\u003eChecking worked facts for errors and tallying which are correct\u003c\/li\u003e\n  \u003cli\u003eDivision facts decoded through a key to name the next ingredient\u003c\/li\u003e\n  \u003cli\u003eMulti-step problems where the last answers unlock a code chart\u003c\/li\u003e\n  \u003cli\u003eA matching page where the line drawn passes through the letter that matters\u003c\/li\u003e\n  \u003cli\u003eFull color and black-and-white versions of every page\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for the whole case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe rule of a CSI Mystery Detective case is that only correct math eliminates anybody. The class is given a crime, a line-up and a page of math worksheets, and works its way down to one name. It is a math escape room minus the locks, the app and the prep. That single rule is what makes detective activities self-marking: a wrong answer leaves too many suspects standing, and the students notice before you do. Run it as a full math activity, in math centers, or hand it to a substitute.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTimes table practice that is not another timed test\u003c\/li\u003e\n  \u003cli\u003eIntroducing or consolidating the 2 and 5 times tables\u003c\/li\u003e\n  \u003cli\u003eMath centers, early finishers and independent work\u003c\/li\u003e\n  \u003cli\u003eEmergency sub plans that run themselves\u003c\/li\u003e\n  \u003cli\u003eBack-to-school weeks and end of year review\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for 3rd grade and 4th grade, and it suits 2nd grade students who are meeting the 2 and 5 times tables for the first time. Third graders usually run it independently; second graders work in pairs and use it to build confidence before moving on to the harder tables.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eZero prep - print and hand out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking by design, because a wrong fact breaks the deduction\u003c\/li\u003e\n  \u003cli\u003eFact practice students ask to do again\u003c\/li\u003e\n  \u003cli\u003eWorks as a whole lesson, a center, or a filler for an awkward afternoon\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLove this resource?\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education for new detective cases, seasonal math activities and updates on discounts and new releases.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\" target=\"_blank\" rel=\"noopener\"\u003eFollow Kiwiland Education on TPT ↗\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61951261901170,"sku":"4143350","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/mad-scientist-times-tables-x2-x5-csi-mystery-detective-grades-3-5-4143350.jpg?v=1792459855"}],"url":"https:\/\/kiwilandeducation.com\/collections\/csi-mysteries.oembed","provider":"Kiwiland Education","version":"1.0","type":"link"}