{"product_id":"addition-skip-counting-csi-mystery-worksheets-grades-3-6-the-number-on-the-loose","title":"Addition \u0026 Skip Counting CSI Mystery Worksheets | Grades 3–6 | The Number on the Loose","description":"\u003cp\u003eAugust CSI math worksheets for 4th grade math review that stretches to 3rd grade and 5th grade: hundreds chart puzzles, skip counting and multiples of 4, run as a CSI Mystery Detective case where the suspect happens to be a number. Nobody can say which one, so the class runs a real investigation: evidence, forensics, line-up, interrogation, with every stage taking more numbers off the board. Supplied ready to print in color and black-and-white versions. Students decode a cipher, shade every multiple of 4, skip count in twenties to check the witness numbers and finish on a shading puzzle that closes the mystery.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Case: The Suspect Number\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThere is a number at the center of this and nobody can say which one. Your students run it as a real investigation: find the evidence, do the forensics, put the survivors in a line-up, then interrogate the last two. Every stage takes more numbers off the board. The final puzzle is the one that gets 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 4 on a hundreds chart\u003c\/li\u003e\n  \u003cli\u003eSkip counting in twenties to check the witness numbers\u003c\/li\u003e\n  \u003cli\u003eCross-matching the evidence so far to narrow the suspect list\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\u003eEvery CSI Mystery Detective case runs on the same engine: solve, eliminate, repeat. The class is handed a case and a page of math worksheets, and the answers rule candidates out one by one until a single one is left. It is a math escape room without locks, apps or preparation of any kind. Because the deduction only closes on correct arithmetic, detective activities get checked by the student rather than by you. As a math activity it fills a lesson, sits in math centers, or runs itself 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\u003eSkip counting and multiples practice with a purpose behind it\u003c\/li\u003e\n  \u003cli\u003eHundreds chart work that is not coloring for its own sake\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 want the hundreds chart explained once before starting; fourth and fifth graders run the investigation independently. It also suits 2nd grade students who are ahead on skip counting and ready for something longer.\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":61980769485170,"sku":"2671758","price":4.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/skip-counting-5s-math-worksheets-hundreds-chart-detective-case-cover-2671758.jpg?v=1792459155","url":"https:\/\/kiwilandeducation.com\/products\/addition-skip-counting-csi-mystery-worksheets-grades-3-6-the-number-on-the-loose","provider":"Kiwiland Education","version":"1.0","type":"link"}