{"product_id":"grade-4-math-mystery-activity-book-for-kids-ages-8-11-20-detective-cases","title":"Grade 4 Math Mystery Activity Book for Kids Ages 8–11 | 20 Detective Cases","description":"\u003ch1 data-pm-slice=\"1 1 []\"\u003e\n\u003cspan\u003eGrade 4 Math Mystery Activity Book for Kids Ages 8–11, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e20 Detective Cases | Math Puzzles, Secret Codes \u0026amp; Problem-Solving Adventures\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h1\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003e\u003cspan\u003eSolve the math. Decode the clues. Catch the culprit!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWelcome to Whirligig Windmill Village, where something mysterious is happening and every number holds a clue!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn \u003c\/span\u003e\u003cem\u003e\u003cspan\u003eMurder at the Whirligig Windmill Village\u003c\/span\u003e\u003c\/em\u003e\u003cspan\u003e by Lillian Jacobs, young detectives must solve 20 math-based mystery cases to uncover the truth behind a larger village mystery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrom missing flour scoops and swapped grain sacks to mysterious clues hidden around the village, every case challenges children to think carefully, solve math problems, and eliminate suspects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis isn't an ordinary fourth-grade math workbook. It's a detective adventure where \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003emath is the key to solving every mystery!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e🔎 What's Inside?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e20 Math Detective Mysteries:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Investigate missing objects, suspicious villagers, and unusual events.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e5 Math Clues Per Case:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Solve puzzles that provide evidence to eliminate suspects.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSecret Messages and Codes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Practice math skills while decoding hidden clues.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSuspect Elimination Challenges:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Use deductive reasoning to identify the culprit.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMaps and Grid Puzzles:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Follow directions, calculate distances, and discover hidden locations.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDetective Case Reports:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Record conclusions and explain the evidence.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDetective Rank Tracker:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Progress from Rookie Detective to Master Detective.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFinal Mystery:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Combine clues collected throughout the book to solve the ultimate case.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSolutions Included:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Check work and review the answers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003e✏️ Math Skills Kids Will Practice\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eDesigned around fourth-grade math concepts, this educational mystery activity book includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMultiplication and division\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMulti-digit multiplication\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eWord problems\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFractions-free number patterns and missing factors\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOrder of operations\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eArea and perimeter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eElapsed time\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMeasurement conversions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMaps, scale, coordinates, and grids\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNumber properties and rounding\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eLogic, reasoning, and problem-solving\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eEach math challenge has a purpose: solving the case and getting one step closer to the truth.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e🕵️ Why Kids Will Love It\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThey're the detective.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Instead of completing unrelated worksheets, children investigate suspects and follow clues.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEvery answer matters.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Solving each puzzle reveals evidence that brings them closer to identifying the culprit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIt's a continuing adventure.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Twenty individual cases contribute clues to one final mystery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eThey can track their progress.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e A detective rank system encourages children to complete each investigation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e📚 Great For\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFourth-grade math enrichment\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHomeschool math activities\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIndependent learning and problem-solving\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eKids who enjoy mysteries, puzzles, and detective games\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEducational activities during school breaks\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eScreen-free entertainment\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGifts for curious kids ages 8–11\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eBook Details\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eTitle:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Murder at the Whirligig Windmill Village\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAuthor:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Lillian Jacobs\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSeries:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Math Detectives\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRecommended Ages:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8–11\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGrade Level:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Grade 4\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMysteries:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 20 detective cases plus a final mystery\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLength:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 315-page PDF\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSubjects:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Mathematics, Logic Puzzles, Critical Thinking, Mystery Games\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCan You Solve the Final Mystery?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eEvery solved case reveals another piece of the puzzle. Follow the evidence, decode the hidden messages, and discover who is behind the mystery at Whirligig Windmill Village.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGrab your pencil, sharpen your math skills, and become the village's next Master Detective!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Lillian Jacobs","offers":[{"title":"Default Title","offer_id":67791901425842,"sku":null,"price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/9596\/8434\/files\/ChatGPTImageOct23_2026_06_56_28PM-1.png?v=1792796209","url":"https:\/\/cmh-publishing.com\/products\/grade-4-math-mystery-activity-book-for-kids-ages-8-11-20-detective-cases","provider":"CMH Publishing","version":"1.0","type":"link"}