Need a fun way to review adding and subtracting integers? This zombie-themed CSI Math Mystery printable PDF is a hit with 6th, 7th, 8th, and 9th grade students. Students solve integer puzzles to uncover clues and eliminate suspects one by one—until they find the zombie leader!
This print-and-go Halloween math activity is ideal for middle school review, no-prep sub plans, homeschool, or RTI. With high-interest storytelling and skill-based practice, students stay motivated while reinforcing positive and negative number operations.
Story Summary
The zombie apocalypse has begun, and your school is in ruins. You’ve been sent out to spy on the undead to identify the first infected zombie—the source of the outbreak. Can you solve all five clues and stop the zombie leader before it’s too late?
Seasonal & Flexible Uses
- Halloween math review
- Fall-themed classroom activity
- Middle school RTI or intervention
- Homeschool enrichment
- Engaging sub plans
Skills Covered
- Adding integers (positive and negative)
- Subtracting integers with mixed signs
- Applying integer operations in word problems
What’s Included
- 5 integer-based math puzzles
- Zombie outbreak mystery storyline
- Suspect elimination worksheet format
- Printable student pages and clue sheets
- Full answer key
What Is a CSI Math Mystery?
CSI Math Mysteries are printable, escape-room-style activities where students solve themed math puzzles to eliminate suspects. No locks or apps required—just engaging clues, essential skill practice, and lots of problem solving. Perfect for classrooms, homeschool, or math centers.
📎 Please Note: This is a printable PDF product. Simply download, print, and you’re ready to go—no apps or locks required.
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