{"product_id":"skip-counting-addition-csi-mystery-worksheets-grades-3-6-the-hundreds-chart-heist","title":"Skip Counting \u0026 Addition CSI Mystery Worksheets | Grades 3–6 | The Hundreds Chart Heist","description":"\u003cp\u003e3rd grade, 4th grade and 5th grade math review of multiples, factors and skip counting, run as a CSI Mystery Detective case that fits January, when classes need a restart after the break. A number is guilty and nobody knows which one, so students work it like a real investigation - evidence, forensics, line-up, interrogation - and every stage rules more numbers out. These CSI math worksheets turn a hundreds chart into the crime scene, and the mystery only closes when the last two suspects are separated by one final puzzle. Print and go. Students crack a letter-and-number cipher, shade the multiples of 3 and 4, and cross-match witness numbers against the evidence. Answer keys included.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Suspect Number\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA number has done something, and nobody knows which one. Your students work it the way a real investigation works: evidence first, then forensics, then a line-up, then interrogation. Every stage rules more numbers out. By the end there are two left, both claiming innocence, and one puzzle standing between your class and a confession.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eA letter-and-number cipher that decodes the opening message\u003c\/li\u003e\n  \u003cli\u003eShading all the multiples of 3 and 4 on a hundreds chart\u003c\/li\u003e\n  \u003cli\u003eNarrowing the suspects to numbers that are multiples of both\u003c\/li\u003e\n  \u003cli\u003eCross-matching witness numbers against the evidence so far\u003c\/li\u003e\n  \u003cli\u003eA final shading puzzle that separates the last two suspects\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, cross a name off the line-up, and keep narrowing until one 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 candidate 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\u003eIntroducing or consolidating multiples and factors\u003c\/li\u003e\n  \u003cli\u003eHundreds chart and skip counting work with a purpose behind it\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 the hundreds chart talked through once before they start; fourth and fifth graders run the whole investigation independently. It also gives 6th grade students who are shaky on factors a way to rebuild without going back to a worksheet.\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 an early error shows up later\u003c\/li\u003e\n  \u003cli\u003eNumber work 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":61980785770866,"sku":"2672015","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/skip-counting-3s-4s-math-worksheets-detective-case-cover-2672015.jpg?v=1792460140","url":"https:\/\/kiwilandeducation.com\/products\/skip-counting-addition-csi-mystery-worksheets-grades-3-6-the-hundreds-chart-heist","provider":"Kiwiland Education","version":"1.0","type":"link"}