{"product_id":"halloween-order-of-operations-csi-mystery","title":"Halloween Order of Operations CSI Mystery | Grades 4–6 | Haunted Hotel","description":"\u003cp\u003eHalloween order of operations worksheets for 5th grade, set in a haunted hotel: one CSI Mystery Detective math case with fifteen suspect rooms and five clues built on parentheses, brackets and braces, with no exponents. It's October math your class can do with no prep. Use it as a Halloween math activity for math centers, a sub day, early finishers or the review week before PEMDAS moves on to exponents. Color and black and white pages are both included, and every clue has an answer key.\u003c\/p\u003e\n\u003cp\u003eThe week before Halloween is a good time for this case. Students work the five clues in order and cross rooms off the chart as they go, and the ghost's room only shows up when all the working is right. That does the checking for you. It's an order of operations activity that fills a full lesson, or a few days if you spread it out.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Case: The Haunted Hotel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt midnight on Halloween every light in the Grand Hotel flickers, the lobby clock stops and a page goes missing from the guest register. The hotel ghost has settled into one of fifteen rooms for the night.\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\u003eClue 1, the ghost's footprints: a hall of equation tiles where only the true ones can be stepped on, and the staircase at the end names the door color.\u003c\/li\u003e\n  \u003cli\u003eClue 2, the seance: thirteen instructions in words, and students pick the expression that says the same thing. The letters spell the ghost's message.\u003c\/li\u003e\n  \u003cli\u003eClue 3, the smudged ledger: ten lines with one operation sign rubbed out of each, to be worked out and written back in.\u003c\/li\u003e\n  \u003cli\u003eClue 4, the guest register: a crossnumber whose clues are expressions. The shaded digits tell you the floor.\u003c\/li\u003e\n  \u003cli\u003eClue 5, the hotel plan: solve the room you're in and leave by the door that shows your answer, from the lobby to the attic.\u003c\/li\u003e\n  \u003cli\u003eDetective story, suspect chart, teacher notes, and full answer keys for every page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Is a CSI Mystery Detective Case?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt's a printable investigation. Your class reads the story, gets a chart of fifteen suspects and works through five clue pages. Each clue is a different kind of math task, and each one rules some suspects out. When the arithmetic is right all the way through, one suspect is left.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to Use This Resource\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTeach it as a whole class lesson in the week of Halloween, or hand it to a small group that has finished the unit early. It also works as homework over a few nights, one clue at a time. Later in the year it's spiral review for test prep, and for 6th grade it's a first week warm up before exponents join the order of operations.\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 numerical expressions with grouping symbols are taught (5.OA.A.1 and 5.OA.A.2). It also suits 6th graders who need the order of operations steady before exponents, and 4th graders ready for multi-step calculations. There are no exponents and no negative numbers in the pack.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love CSI Mystery Detective Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNo prep. Print the pages and hand them out.\u003c\/li\u003e\n  \u003cli\u003eThe wrong answers on the pages are the mistakes students actually make, like working left to right or ignoring the parentheses, and you can see which step went wrong.\u003c\/li\u003e\n  \u003cli\u003eStudents check their own work, because a wrong answer leaves them with the wrong room.\u003c\/li\u003e\n  \u003cli\u003eFive different puzzle types, not five pages of the same thing.\u003c\/li\u003e\n\u003c\/ul\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 elementary and middle school classrooms.\u003c\/p\u003e\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":62593171947890,"sku":"17952025","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0909\/2848\/0626\/files\/halloween-order-of-operations-worksheets-5th-grade-csi-mystery-haunted-hotel.jpg?v=1792612955","url":"https:\/\/kiwilandeducation.com\/products\/halloween-order-of-operations-csi-mystery","provider":"Kiwiland Education","version":"1.0","type":"link"}