FREE PRINTABLE • GRADES 3–4 • MATH + CRITICAL THINKING
Turn math practice into a mini mystery.
Try The Case of the Missing Spark Key—a colorful BrainSpark adventure that helps students practice multiplication, division, and reading for clues.
DOWNLOAD THE FREE MYSTERY PDF →
Free means free: no checkout, credit card, address, or account needed. The button opens your printable PDF immediately. Email signup is optional.
What you get
- 4 full-color student activity pages
- 1 educator answer-key page
- Multiplication code challenge and division/equal-groups clues
- A final investigation with space to explain the evidence
- About 15–20 minutes of student work
Download. Print. Solve the case.
- Open the PDF. Click the download button and save a copy to your device.
- Print the student pages. Use US Letter paper in landscape orientation and select “Fit” in your print settings. Keep the answer key for yourself.
- Introduce the mission. Let your student solve the math, follow the clues, and explain their conclusion.
Perfect for: homeschool practice, math centers, early finishers, tutoring, review days, and enrichment.
DOWNLOAD THE FREE MYSTERY PDF →
Having trouble? Contact BrainSpark Lab for help.
Ready for a bigger investigation?
Keep the learning going with a full BrainSpark mystery.
- The Case of the Missing Multiplication Trophy
- The Case of the Missing Division Medal
- Get both mysteries in the Math Mystery Bundle
Teach → Practice → Reinforce → Master
Where Learning Gets Its Spark.