{"product_id":"christmas-addition-subtraction-csi-math-mystery-grades-2-5-secret-santa","title":"Christmas Addition \u0026 Subtraction CSI Math Mystery | Grades 2–5 | Secret Santa","description":"\u003cp\u003eWrap up Christmas math review in a mystery your students will beg to solve. Someone in the classroom is the Secret Santa, and it's up to your class to figure out exactly who. This printable \u003cstrong\u003eChristmas Addition \u0026amp; Subtraction CSI Math Mystery\u003c\/strong\u003e is built for \u003cstrong\u003eGrades 2–5 classroom teachers, homeschool parents, and tutors\u003c\/strong\u003e who want focused math practice wrapped in a story students actually care about solving.\u003c\/p\u003e\n\u003cp\u003eStudents work through a series of clue pages, use their answers to eliminate suspects, and race to crack the case — all while getting meaningful practice with addition and subtraction. No apps, no prep, no fuss.\u003c\/p\u003e\n\u003ch3\u003eQuick Details\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels:\u003c\/strong\u003e Grades 2–5 (best for 3rd–4th; great for advanced 2nd graders or 5th-grade intervention)\u003cbr\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Printable PDF\u003cbr\u003e\n\u003cstrong\u003eResource Type:\u003c\/strong\u003e CSI Math Mystery worksheets\u003cbr\u003e\n\u003cstrong\u003eMath Skills:\u003c\/strong\u003e Addition to 100, 2- and 3-digit addition with regrouping, subtraction from 100, mapping with coordinates\u003cbr\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e CCSS 2.NBT.B.5, 2.NBT.B.6, 1.MD.C.4\u003cbr\u003e\n\u003cstrong\u003ePages:\u003c\/strong\u003e 15 pages including answer key\u003cbr\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Christmas, December, math centers, sub plans, early finishers, small groups, and homeschool math\u003cbr\u003e\n\u003cstrong\u003eTech Needed:\u003c\/strong\u003e None — no apps, locks, passwords, or student logins required\u003c\/p\u003e\n\u003ch3\u003eCase Summary\u003c\/h3\u003e\n\u003cp\u003eIt's the most wonderful time of the year — and someone in the classroom has been playing Secret Santa. Gifts have been turning up, but no one will say who's behind them. Your students pull on their detective coats and take the case: find the Secret Santa before the holidays are over.\u003c\/p\u003e\n\u003cp\u003eEvery classmate is a possible suspect, and the only way to clear them is to work the math. Students map locations with coordinates, add their way to 100 and beyond with regrouping, and subtract to chase down each clue. One correct answer at a time, the list of suspects gets shorter.\u003c\/p\u003e\n\u003cp\u003eAs the evidence stacks up, the field narrows to the final few — but the Secret Santa is still hiding in plain sight. The last clues separate the innocent from the guilty and reveal exactly who has been spreading the holiday cheer.\u003c\/p\u003e\n\u003cp\u003eHand your students the evidence, point them at the suspects, and let them prove they can crack the case. The math is the only thing standing between them and the truth.\u003c\/p\u003e\n\u003ch3\u003eSkills Covered\u003c\/h3\u003e\n\u003cp\u003eStudents will practice:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAddition to 100\u003c\/li\u003e\n  \u003cli\u003e2-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003e3-digit addition with regrouping\u003c\/li\u003e\n  \u003cli\u003eSubtraction from 100\u003c\/li\u003e\n  \u003cli\u003eMapping using coordinates\u003c\/li\u003e\n  \u003cli\u003eUsing answers to eliminate suspects\u003c\/li\u003e\n  \u003cli\u003eLogic, reasoning, and problem solving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCSI-style math mystery activity\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction clue pages\u003c\/li\u003e\n  \u003cli\u003eCoordinate mapping puzzle\u003c\/li\u003e\n  \u003cli\u003eSuspect elimination activity\u003c\/li\u003e\n  \u003cli\u003eAnswer key\u003c\/li\u003e\n  \u003cli\u003ePrint-and-go PDF format\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cp\u003eThis printable CSI Math Mystery works well for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChristmas and December math activities\u003c\/li\u003e\n  \u003cli\u003eThe week before winter break\u003c\/li\u003e\n  \u003cli\u003eMath centers and early finishers\u003c\/li\u003e\n  \u003cli\u003eSubstitute teacher plans\u003c\/li\u003e\n  \u003cli\u003eSmall groups and independent work\u003c\/li\u003e\n  \u003cli\u003eHomeschool math\u003c\/li\u003e\n  \u003cli\u003eAddition and subtraction practice\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":61981869113714,"sku":"4216910","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/secret-santa-christmas-addition-subtraction-csi-math-mystery-grades-2-5-cover.jpg?v=1782502111","url":"https:\/\/kiwilandeducation.com\/products\/christmas-addition-subtraction-csi-math-mystery-grades-2-5-secret-santa","provider":"Kiwiland Education","version":"1.0","type":"link"}