{"product_id":"10-more-10-less-1-more-1-less-mystery-detective","title":"10 More 10 Less, 1 More 1 Less | Mystery Detective | Grades 1–3 | Back to School","description":"\u003cp\u003eThree CSI Mini Mystery Detective math case files for 1st grade and 2nd grade, on 10 more 10 less and 1 more 1 less. Students work the number sense problems on each crime sheet, then use the answers to cross a suspect off the lineup until one name is left, which turns number relationships into math worksheets and math activities your class will finish. Back to school math for August and September, with a school theme running through all three cases, then math centers, early finishers, homework, morning work, sub plans and test prep for the rest of the year. Print and go CSI math, with full answer keys and detective activities your class can run on their own.\u003c\/p\u003e\n\n\u003cp\u003e\u003c!--LEAD--\u003eFirst graders will work through ten more and ten less all morning when there is someone to catch at the end of it. Each answer your class works out takes a suspect off the lineup, so a six year old keeps going because they want to know who did it. Short pages, so one case fits a morning work slot, and the answer keys are behind every one.\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\u003eThe Half-Eaten Apple\u003c\/strong\u003e - half the teacher's apple is gone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe Missing Principal\u003c\/strong\u003e - the principal is nowhere to be found\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe School Supplies\u003c\/strong\u003e - the whole classroom stash is gone\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\n\n\n\n\u003cp\u003e\u003cstrong\u003eWhat's Inside\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThree case files, each with a crime sheet and its own lineup of suspects\u003c\/li\u003e\n  \u003cli\u003e1 more, 1 less, 10 more and 10 less on every page\u003c\/li\u003e\n  \u003cli\u003eNumbers stay inside 120, so the counting is the work and not the reading\u003c\/li\u003e\n  \u003cli\u003eEach answer matches one suspect and no other, so the page checks itself\u003c\/li\u003e\n  \u003cli\u003eA full answer key for every 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\n\n\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 holding one crime. The suspects stand in a lineup with a number each, the questions on the crime sheet produce those numbers, and a correct answer knocks a suspect out until the last one left is the culprit. Nothing is cut out or laminated, so what does the work is the arithmetic itself, and that is the difference between these detective activities and a page of math worksheets. One case runs for a class period.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSlot this into the number sense unit, right after your class has met adding and taking ten on a hundred chart and needs to do it without one. It is also the page to hand out later in the year when the skill has quietly gone, which with 10 more and 10 less it always does. Because a wrong answer strikes off the wrong suspect, young students notice the mistake themselves.\u003c\/p\u003e\n\n\u003cp\u003eTeachers use it for test prep, homework, math centers, morning work, early finishers, sub plans and homeschool lessons, with a whole class, a small group or one child alone.\u003c\/p\u003e\n\n\n\n\n\n\u003cp\u003e\u003cstrong\u003eGrade Levels\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWritten for 1st grade and 2nd grade, where 1 more, 1 less, 10 more and 10 less sit in the standards. Kindergarten classes take the 1 more and 1 less case at the end of the year, and third graders use the set as a fast warm up before 100 more and 100 less.\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\u003eSmall numbers and short pages, which suits a first grade attention span\u003c\/li\u003e\n  \u003cli\u003eStudents see their own mistakes as the wrong suspect comes off the lineup\u003c\/li\u003e\n  \u003cli\u003eNo prep, and the answer keys make grading quick\u003c\/li\u003e\n  \u003cli\u003eWorks with a whole class, a small group, partners, or one student alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\n\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\"\u003ehttps:\/\/www.teacherspayteachers.com\/Sellers-Im-Following\/Add\/Kiwiland\u003c\/a\u003e\u003c\/p\u003e","brand":"Kiwiland Education","offers":[{"title":"Default Title","offer_id":62593068958066,"sku":"10082851","price":4.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/10-more-10-less-1-more-1-less-worksheets-grade-1-2.jpg?v=1792612221","url":"https:\/\/kiwilandeducation.com\/products\/10-more-10-less-1-more-1-less-mystery-detective","provider":"Kiwiland Education","version":"1.0","type":"link"}