{"title":"Grade 7 Math: Expressions \u0026 Equations","description":"\u003cp\u003e7th grade math worksheets and activities for expressions \u0026amp; equations (Common Core 7.EE): printable mystery worksheets, CSI cases and digital escape rooms.\u003c\/p\u003e","products":[{"product_id":"solving-two-step-multi-step-inequalities-mystery-detective-worksheets-grades-7-9-printable-detective-pack","title":"Solving Two-Step \u0026 Multi-Step Inequalities | Mystery Detective Worksheets | Grades 7–9 | Printable Detective Pack","description":"\u003cp\u003eTwo step inequalities worksheets for 7th grade and 8th grade, with multi step problems included: five CSI Mini Mystery Detective math cases where each solution set rules a suspect out until the culprit is left. It is the second half of the inequalities unit as self-checking math activities, because a solution that matches no suspect sends the student back to the page. No prep, print and go, full answer keys, for test prep, math centers, early finishers, homework, morning work and sub plans, any month of the year.\u003c\/p\u003e\n\n\u003cp\u003eTwo step inequalities are rarely a topic students ask for more of, and this set is the exception in most rooms because the math is the route to the culprit rather than the point of the page. Each CSI Mini Mystery Detective math case fills a period, so five of them are a week of test prep with the keys already written, and any one of them works alone as a sub plan.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Museum Heist\u003c\/strong\u003e - a priceless artifact is taken\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecret Battle Plans\u003c\/strong\u003e - the plans are gone from the safe\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Rare Plants\u003c\/strong\u003e - taken from the botanical gardens\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatue Graffiti\u003c\/strong\u003e - the city statue is covered in paint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJewelry Store Theft\u003c\/strong\u003e - the store is cleaned out overnight\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eFive case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003eTwo step and multi-step inequalities, solved for the variable\u003c\/li\u003e\n  \u003cli\u003eProblems where students have to flip the sign after dividing by a negative\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every case\u003c\/li\u003e\n  \u003cli\u003ePrint and go: no cutting, no laminating, nothing to prepare\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA CSI Mini Mystery Detective puts a crime, a lineup and a page of math in front of your class, and the only way to name the culprit is to get the math right. Each suspect carries a number, each solved question matches one of them, and that suspect is struck off until a single name remains. Because a wrong solution eliminates the wrong person, these detective activities push students to check their work in a way math worksheets cannot. One case runs a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eUse this once one step inequalities are secure and the class is ready for two steps, then again as the review before the algebra test. The mistake this set is built to catch is the famous one, where students divide by a negative and leave the sign facing the same way. A solution set on the wrong side crosses off the wrong suspect, so the error surfaces on the page instead of in your grading pile.\u003c\/p\u003e\n\n\u003cp\u003eIt covers test prep, homework, math centers, morning work, early finishers, sub plans, homeschool lessons and review days, with a class, a small group or one student alone.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 7th grade and 8th grade, where two step and multi-step inequalities sit in the standards. Sixth graders who have finished one step inequalities take the earlier cases, and high school students use the set as a refresher before compound inequalities.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love These Cases\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBuilt around the sign flip, which is where two step inequalities go wrong\u003c\/li\u003e\n  \u003cli\u003eStudents catch that mistake themselves when the wrong suspect comes off\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\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 Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for middle school 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":61955594092914,"sku":"9515358","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/solving-two-step-inequalities-worksheets-7th-grade-algebra-9515358.jpg?v=1792461952"},{"product_id":"two-step-equations-digital-escape-room-algebra-activity-grades-7-9-factory-mission","title":"Two-Step Equations Digital Escape Room | Algebra Activity | Grades 7–9 | Factory Mission","description":"\u003cp\u003e\u003cstrong\u003eSolve for x or stay stuck in the factory\u003c\/strong\u003e — this Two-Step Equations Digital Escape Room turns algebra practice into a race to crack the codes. Students isolate the variable to work their way out, one puzzle at a time.\u003c\/p\u003e\u003cp\u003eIt's fully digital and self-checking, so wrong answers won't open the lock and there's nothing for you to grade. Built for Grades 7–9 with a factory-mission theme. Open it in any browser — no app, login, or subscription.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 7–9 (algebra)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Interactive, browser-based digital escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e No-prep, self-checking math activity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e Solving two-step equations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e Any device with a web browser\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe mission\u003c\/h3\u003e\u003cp\u003eThe factory's locked down and the exit codes are hidden inside two-step equations. Solve each one correctly — undo the operations in the right order — and the next clue appears, one stage at a time.\u003c\/p\u003e\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen the private link in any browser — no app, login, or subscription\u003c\/li\u003e\n\u003cli\u003eSolve each two-step equation to reveal a code\u003c\/li\u003e\n\u003cli\u003eEnter the code to unlock the next stage — wrong answers won't open it\u003c\/li\u003e\n\u003cli\u003eThe room self-checks, so students get instant feedback\u003c\/li\u003e\n\u003cli\u003eCrack the final code to escape\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive digital escape room hosted on a private site\u003c\/li\u003e\n\u003cli\u003eAnimated, self-checking puzzles with randomized answers for replayability\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions\u003c\/li\u003e\n\u003cli\u003eA PDF with your private access link to share via Google Classroom, email, or your LMS\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSolving two-step equations\u003c\/li\u003e\n\u003cli\u003eInverse operations and isolating the variable\u003c\/li\u003e\n\u003cli\u003eWorking with integers and rational coefficients\u003c\/li\u003e\n\u003cli\u003eAlgebraic reasoning and problem solving\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eAlgebra centers, tech time, early finishers, sub plans, unit review, test prep, homeschool, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61957814124914,"sku":"11590644","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/two-step-equations-digital-escape-room-1.jpg?v=1781943665"},{"product_id":"combining-like-terms-digital-escape-room-math-activity-grades-6-8","title":"Combining Like Terms Digital Escape Room | Math Activity | Grades 6-8","description":"\u003cp\u003e\u003cstrong\u003eLock the lesson and hand over a link.\u003c\/strong\u003e Your students step into an interactive escape room where every locked door hides a combining like terms challenge. Solve it, reveal the code, and work your way out before time runs out.\u003c\/p\u003e\n\u003cp\u003eIt's a no-prep, self-checking review game that runs in any browser — no apps, no logins, no printing. Just send the link and let them race the clock.\u003c\/p\u003e\n\u003ch3\u003eQuick details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 6-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Interactive, browser-based digital escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e No-prep, self-checking review game\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e Combining like terms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e Any device with a web browser\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe mission\u003c\/h3\u003e\n\u003cp\u003eAn agent's coded message is scrambled into messy algebraic expressions. Combine the like terms to simplify each one, reveal the codes, and unlock the safe house before the trail goes cold.\u003c\/p\u003e\n\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen the private link — no app or login required.\u003c\/li\u003e\n\u003cli\u003eWork through a series of animated combining like terms challenges.\u003c\/li\u003e\n\u003cli\u003eEach correct answer reveals a code that unlocks the next room.\u003c\/li\u003e\n\u003cli\u003eWrong answers won't open the lock, so the room checks itself.\u003c\/li\u003e\n\u003cli\u003eCrack the final code to escape and win.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAn interactive escape room hosted on a private site — animated, with randomized answers for replayability.\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions.\u003c\/li\u003e\n\u003cli\u003eA PDF containing your private access link to share via Google Classroom, email, or any LMS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSkills covered\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdentifying like terms in algebraic expressions\u003c\/li\u003e\n\u003cli\u003eCombining like terms to simplify expressions\u003c\/li\u003e\n\u003cli\u003eWorking with positive and negative coefficients\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest used for\u003c\/h3\u003e\n\u003cp\u003eMath centers, tech time, early finishers, sub plans, homeschool, test prep, review days, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61959810089330,"sku":"12094491","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/combining-like-terms-digital-escape-room-1.jpg?v=1782006223"},{"product_id":"distributive-property-with-combining-like-terms-digital-escape-room-math-activity-grades-7-9","title":"Distributive Property with Combining Like Terms Digital Escape Room | Math Activity | Grades 7–9","description":"\u003cp\u003eLock the lesson and hand over a link. This animated, self-checking digital escape room turns distributive property and combining like terms practice into a high-stakes spy training mission your students will race to finish.\u003c\/p\u003e\u003cp\u003eNo printing, no logins, no prep. Just send the private link and let your recruits simplify their way out.\u003c\/p\u003e\u003ch3\u003eQuick details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade levels:\u003c\/strong\u003e 7–9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e interactive, browser-based escape room\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResource type:\u003c\/strong\u003e no-prep digital review game\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill focus:\u003c\/strong\u003e distributing across parentheses and then combining like terms to simplify expressions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTech needed:\u003c\/strong\u003e any device with a web browser\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe mission\u003c\/h3\u003e\u003cp\u003eYour recruits are deep in spy training, leaping into a high-altitude skydiving exercise. To land safely and pass the course, they must simplify each expression correctly — distribute, combine like terms, and choose the right code. One wrong answer and the hatch stays locked.\u003c\/p\u003e\u003ch3\u003eHow the escape room works\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen the private link — no app, no login, no account.\u003c\/li\u003e\n\u003cli\u003eSolve each animated challenge: distribute, then combine like terms.\u003c\/li\u003e\n\u003cli\u003eA correct answer reveals the next code; wrong answers won't unlock the door.\u003c\/li\u003e\n\u003cli\u003eCrack the final code to complete the training and escape.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAn interactive escape room hosted on a private site (animated, with randomized answers for replayability).\u003c\/li\u003e\n\u003cli\u003eNo Boom Cards, Google Slides, logins, or subscriptions required.\u003c\/li\u003e\n\u003cli\u003eA PDF containing the private access link to share via Google Classroom, email, or any LMS.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSkills covered\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplying the distributive property across multiple terms\u003c\/li\u003e\n\u003cli\u003eCombining like terms to simplify expressions\u003c\/li\u003e\n\u003cli\u003eWorking with two sets of parentheses in one expression\u003c\/li\u003e\n\u003cli\u003eOperating with positive and negative coefficients\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest used for\u003c\/h3\u003e\u003cp\u003eMath centers, tech time, early finishers, sub plans, homeschool, test prep, end-of-unit review, and distance learning.\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61961723052402,"sku":"11546388","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/distributive-property-combining-like-terms-digital-escape-room-1.jpg?v=1782083753"},{"product_id":"combining-like-terms-mystery-detective-worksheets-grades-6-8-distributive-property","title":"Combining Like Terms | Mystery Detective Worksheets | Grades 6–8 | Distributive Property","description":"\u003cp\u003eCombining like terms and distributive property worksheets for 6th grade, 7th grade, 8th grade and 9th grade are all in this no prep Mini Mystery Detective pack of math worksheets. It's pre-algebra practice for math centers, early finishers, sub plans, homework, spiral review and test prep, with an answer key for every case.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe pack has four difficulty levels, which helps in a mixed-ability class. The cases begin with straightforward distributing and no negatives, then work up to negative terms, then to distributing and collecting like terms, and finally to two distributions inside a single expression.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLevel 1, no negatives: distributing a whole number over a sum, such as 3(6x+11) and 7(5x+7)\u003c\/li\u003e\n  \u003cli\u003eLevel 2, with negatives: negative terms inside and outside the parentheses, such as 9(5x–3) and –8(x–6)\u003c\/li\u003e\n  \u003cli\u003eLevel 3, combining like terms: distribute first, then collect the x terms and the constants, such as 3(4x+9)–6x and 4(8x+6)+8\u003c\/li\u003e\n  \u003cli\u003eLevel 4, distributing twice: two products in one expression to expand and simplify, such as 6(5x+6)+2(4x+7) and 3(4x+5)–3(5x+9)\u003c\/li\u003e\n  \u003cli\u003eReading a simplified answer as two parts: a variable term and a constant term\u003c\/li\u003e\n  \u003cli\u003eSuspect line-ups that make every page self-checking\u003c\/li\u003e\n  \u003cli\u003eAnswer keys for every case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eTen school-year cases to crack: the missing locker tag, the vanished hall pass, the empty supply closet, the lost trip forms, the broken scoreboard, the yearbook proofs, the swapped lunches, the silent school bell, the lost show tickets and the sabotaged fair.\u003c\/p\u003e\n\n\u003cp\u003eA contents page lists every case with its level. You can hand each student the sheet that fits.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is a Mini Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit. Every suspect wears an ID badge showing a simplified expression. Each correct answer eliminates one name, and the last suspect standing is the villain.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBell ringers and warm-ups\u003c\/li\u003e\n  \u003cli\u003eIndependent practice after a lesson on the distributive property\u003c\/li\u003e\n  \u003cli\u003eTutoring and re-teaching\u003c\/li\u003e\n  \u003cli\u003eSmall-group intervention and differentiated practice\u003c\/li\u003e\n  \u003cli\u003eWhole-class pre-algebra review\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for 6th, 7th, 8th and 9th graders. It also suits high school students who need more practice simplifying expressions, and advanced 5th graders starting pre-algebra.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNothing to prep or cut out\u003c\/li\u003e\n  \u003cli\u003eStudents can tell when an answer doesn't match a suspect\u003c\/li\u003e\n  \u003cli\u003eA detective story on every page of algebra\u003c\/li\u003e\n  \u003cli\u003eFour levels in the same format\u003c\/li\u003e\n  \u003cli\u003eExpanding, collecting like terms and working with negatives\u003c\/li\u003e\n  \u003cli\u003eUseful for intervention groups and for fast finishers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf your class is starting without variables, the Distributive Property Mystery Detective covers breaking apart products with whole numbers only, in the same detective format.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFollow Kiwiland Education to discover more Mystery Detectives, algebra worksheets, and detective-themed activities for middle school 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":62264449859954,"sku":"17343448","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/combining-like-terms-and-distributive-property-worksheets-mystery-detective-17343448.jpg?v=1792462373"},{"product_id":"two-step-equations-mystery-detective","title":"Two-Step Equations | Mystery Detective Worksheets | Grades 5–8 | Smuggler","description":"\u003cp\u003eTwo step equations practice for 7th grade math, with ten Mini Mystery Detective cases on solving equations of the form px + q = r and p(x + q) = r. It's 7.EE.B.4a work that uses integers, negative numbers and decimals, and the smuggling ring theme suits middle school. Use the worksheets as warm-ups, in math centers or for homework during your expressions and equations unit. There's no prep, and every case has an answer key.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCases 1 to 4 have no parentheses. They start with positive answers, then bring in negative numbers, negative coefficients and decimal coefficients. Cases 5 to 7 move on to equations with parentheses, and the last three cases mix both kinds. Students find each answer on the suspect list and cross that name off. If every answer is right, one suspect is left at the end, and that's the villain.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e10 one-page cases with 20 two-step equations each, and an answer key for every case\u003c\/li\u003e\n  \u003cli\u003eEquations written both ways around, like 7t − 34 = 344 and 168 = −3(k − 36)\u003c\/li\u003e\n  \u003cli\u003eEvery answer is a whole number. Some are negative\u003c\/li\u003e\n  \u003cli\u003eA reference page with worked examples on signs, decimal coefficients, parentheses and checking an answer\u003c\/li\u003e\n  \u003cli\u003eContents page, teacher instructions, a case log and a certificate\u003c\/li\u003e\n  \u003cli\u003e30 pages in black and white\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Container\u003c\/strong\u003e - rare violins gone from the dock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Forged Manifest\u003c\/strong\u003e - stolen paintings listed as bananas\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Ghost Ship\u003c\/strong\u003e - a cargo ship unloading in fog\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Rigged Scales\u003c\/strong\u003e - crates weighing less than they should\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Midnight Truck\u003c\/strong\u003e - a truck with no license plates\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Fake Barcodes\u003c\/strong\u003e - fake sneakers stamped as frozen fish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Secret Warehouse\u003c\/strong\u003e - a warehouse missing from every map\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Hijacked Crane\u003c\/strong\u003e - a container loaded onto a fishing boat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Swapped Crates\u003c\/strong\u003e - diamonds swapped for rubber ducks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Last Cargo Train\u003c\/strong\u003e - the smuggling ring's final shipment\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCase 1 is a good place to start once your class has solved a few two-step equations with positive numbers. The cases get harder in the order they're numbered, which means you can hand them out as the unit goes along. Cases 8 to 10 mix both forms of equation, and they make a solid review before a unit test. The pack also works for small groups, sub days, early finishers and state test prep. 8th grade teachers can use it to review equations at the start of the year.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMade for 7th grade (7.EE.B.4a). Strong 6th graders who are ready for two-step equations can use it too, and it fits 8th grade or pre algebra review.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love Mystery Detectives\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNothing to prep. Print the pages and hand them out\u003c\/li\u003e\n  \u003cli\u003eSelf-checking, because each right answer crosses off a suspect\u003c\/li\u003e\n  \u003cli\u003eIntegers, decimals and parentheses in one pack\u003c\/li\u003e\n  \u003cli\u003eA port smuggling theme written for middle school\u003c\/li\u003e\n  \u003cli\u003eBlack and white pages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWant more cases like these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFollow Kiwiland Education to discover more CSI Mini Mystery Detective cases, no-prep math activities, and detective-themed printables for middle school classrooms.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\"\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62593085702514,"sku":"17953776","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/two-step-equations-worksheets-7th-grade-math-solving-equations-mystery.jpg?v=1792612690"}],"url":"https:\/\/kiwilandeducation.com\/collections\/math-7-ee.oembed","provider":"Kiwiland Education","version":"1.0","type":"link"}