{"product_id":"100th-day-of-school-missing-numbers-to-100-mystery-detective-activity","title":"100th Day of School Missing Numbers to 100 Mystery Detective Activity","description":"\u003cp\u003e100th day of school math worksheets for 1st grade and 2nd grade: five cases of missing numbers to 100, where the number before and the number after is what crosses a place or a number off the clue list. The 100 day treats have gone, a hundred stickers are nowhere in sight and a hundred gremlins are loose in the school, so counting to 100 is the only way through, and a wrong number matches no clue. Print and go with full answer keys: no prep CSI Mini Mystery Detective math cases for morning work, math centers, early finishers, homework and sub plans.\u003c\/p\u003e\n\n\u003cp\u003eThe 100th day of school lands in late January in most rooms, and it needs something the class will sit down and do between the crown-making and the counting collections. A six year old will write the number before and after all morning to find out where the chocolates went, and one case fits a morning work slot. Five math cases in one Mystery Detective download covers the week around it.\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\u003eMissing Chocolates\u003c\/strong\u003e - the 100 day treats have gone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Number to 100\u003c\/strong\u003e - one number is off the chart\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMissing Stickers\u003c\/strong\u003e - a hundred stickers, none in sight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100 Hidden Gremlins\u003c\/strong\u003e - gremlins loose in the school\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrincipals Birthday\u003c\/strong\u003e - nobody knows their age\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 on the number before and the number after to 100\u003c\/li\u003e\n  \u003cli\u003eTwelve questions a page: three cases on the number after, two on the number before\u003c\/li\u003e\n  \u003cli\u003eOne case works in number words, so reading numbers gets practiced as well\u003c\/li\u003e\n  \u003cli\u003eA dozen clues down the side, crossed off one answer at a time\u003c\/li\u003e\n  \u003cli\u003eA red-ink answer key for all five cases, and a certificate page for a closed 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 is one printed page with a crime at the top and a list of clues beside the questions. Each clue carries a number, the answers on the page produce those numbers, and a match strikes that clue out. The one clue nobody matched is the solution. Nothing is cut, laminated or charged, and counting correctly is the only way through.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe obvious week is the 100th day itself, in late January or early February, and the days either side when the room is full of hundred-themed everything. It works as ordinary number sense practice at any point, because the child is counting on and counting back inside a hundred. All the instructions are on the page, so it goes into a sub folder as it is.\u003c\/p\u003e\n\n\u003cp\u003eUse it for morning work, math centers, early finishers, homework, sub plans and homeschool lessons, with a whole class, a small group or one student.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 1st grade, where writing numbers to 100 sits in the standards. Second graders use it as a start of year check, and kindergarten classes late in the year once they are confident past fifty.\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\u003eA miscount matches no clue, so a child spots it without being told\u003c\/li\u003e\n  \u003cli\u003eNothing to prepare on a day that is already busy\u003c\/li\u003e\n  \u003cli\u003eFive short cases covers the hundredth-day week\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners or one student\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 elementary 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":62008160813426,"sku":"8936430","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/100th-day-of-school-numbers-before-and-after-to-100-worksheets-8936430.jpg?v=1792460272","url":"https:\/\/kiwilandeducation.com\/products\/100th-day-of-school-missing-numbers-to-100-mystery-detective-activity","provider":"Kiwiland Education","version":"1.0","type":"link"}