{"product_id":"thanksgiving-multiplication-and-division-csi-mystery","title":"Thanksgiving Multiplication and Division CSI Mystery Worksheets | Grades 5–6","description":"\u003cp\u003eThanksgiving multiplication and division for 5th grade, all in one CSI Mystery Detective math case: multi-digit multiplication with the standard algorithm, and long division with 2-digit divisors and remainders. It has a Thanksgiving food drive theme. You can run it as a whole-class challenge, give it to small groups or send it home as homework. There's no prep, and the answer key shows every answer.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe night before Thanksgiving, half the cans from the town's food drive disappear, and one of fifteen volunteers took them. Students follow a loop of \"I have, who has\" place cards around a dinner table, fill in multiplication tally sheets that got covered in gravy, finish a pantry chart a squirrel chewed, match division answers to a van's loading list and light up a broken scoreboard. Every clue clears some volunteers. A wrong product or quotient points at the wrong people, which lets students catch their own mistakes before the end.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt's a single detective case spread over five clue pages instead of a page of drill. The story page sets up the crime. On each clue page, students do the math and find out one fact about the thief, such as their team or whether they wear glasses. Then they cross the volunteers who don't match off the suspect chart. One volunteer is left after clue five.\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\u003eOne Thanksgiving case, The Canned Food Caper, with a story page, a suspect chart of 15 volunteers and five clue pages\u003c\/li\u003e\n  \u003cli\u003eMultiplying 3-digit and 4-digit numbers by 2-digit numbers, such as 4,753 × 76\u003c\/li\u003e\n  \u003cli\u003eStandard algorithm practice with the partial products written out. Some digits are hidden and students work them out.\u003c\/li\u003e\n  \u003cli\u003eLong division with 4-digit dividends and 2-digit divisors\u003c\/li\u003e\n  \u003cli\u003eDivision word problems where students decide what the remainder means: boxes needed, full boxes or cans left over\u003c\/li\u003e\n  \u003cli\u003eA multiplication chart read backwards, where students divide to find the missing numbers\u003c\/li\u003e\n  \u003cli\u003eColor and black and white copies of every page\u003c\/li\u003e\n  \u003cli\u003eA complete answer key. Its suspect chart shows which clue removes each volunteer.\u003c\/li\u003e\n  \u003cli\u003eTeacher instructions, 30 pages in all\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Clues\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClue One\u003c\/strong\u003e - pass the pie: a loop of place cards with multi-digit multiplication that spells which team to cross off\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClue Two\u003c\/strong\u003e - the gravy spill: missing digits in three standard algorithm problems give the vest color\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClue Three\u003c\/strong\u003e - the pantry chart: divide to find the chewed numbers, then multiply to find the favorite pie\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClue Four\u003c\/strong\u003e - load the vans: long division word problems with remainders show whether the thief wears glasses\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClue Five\u003c\/strong\u003e - the broken scoreboard: the divisions with no remainder light up the last digit of the badge number\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\u003eUse it in the week of Thanksgiving, or any time in November when your class is working on long division. Partners can split the clue pages and meet back at the suspect chart. It's also a good fit for sub plans, for a review day before a multiplication and division test, and for 6th graders who need long division practice. Homeschool families can use it as a holiday math project, since the story doesn't happen at a school.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWritten for 5th grade, where multi-digit multiplication (5.NBT.B.5) and division with 2-digit divisors (5.NBT.B.6) are taught. 6th grade classes can use it to review the division algorithm (6.NS.B.2).\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\u003cp\u003eThe five clues are five different puzzles. One is a loop of cards, one is a chart with holes in it, and one is a scoreboard. That keeps a long run of multiplication and division from feeling like one long worksheet. When a group gives you a name, the answer key lets you check it straight away.\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\u003cp\u003eFollow Kiwiland Education to discover more CSI Mystery Detective cases, no-prep math activities, and detective-themed printables for upper elementary classrooms.\u003c\/p\u003e\n\u003cp\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62847943737714,"sku":"18303708","price":5.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/thanksgiving-multiplication-and-division-5th-grade-csi-mystery-detective.jpg?v=1794448082","url":"https:\/\/kiwilandeducation.com\/products\/thanksgiving-multiplication-and-division-csi-mystery","provider":"Kiwiland Education","version":"1.0","type":"link"}