Multiplication Math Mystery Activity | Grades 3–4 | Missing Trophy Detective Case

Can your student solve the case?

Something strange has happened at BrainSpark Lab.

The prized Multiplication Trophy is missing, four students were nearby, and the evidence seems to point in more than one direction.

Students must use their multiplication skills to investigate the mystery.

But this isn't another page of repetitive multiplication problems.

Throughout the investigation, students will:

solve multiplication facts, crack a secret code, analyze a timeline, follow a lab map, evaluate witness evidence, compare clues, identify misleading information, and make a final evidence-based conclusion.

The mystery is intentionally designed so students cannot simply guess the answer from the first clue. They must continue investigating and use all the evidence before solving the case.

Skills Reinforced

Multiplication facts
Problem solving
Logical reasoning
Reading comprehension
Evidence-based thinking
Critical thinking
Written response

What's Included

15-page illustrated student mystery packet

Separate educator answer key

Interactive multiplication challenges

Secret-code activity

Suspect profiles

Evidence clues

Classroom-map investigation

Critical-thinking questions

Final investigation

Make Your Case written response

Bonus math challenge

Student reflection

BrainSpark detective experience

Best For

Grades 3–4

Homeschool practice

Math centers

Early finishers

Small groups

Tutoring

Independent practice

Sub plans

Math review

Enrichment

Estimated Completion Time

Approximately 30–45 minutes, depending on student ability and whether the activity is completed independently or collaboratively.

BrainSpark Lab

Teach It. Practice It. Reinforce It. Master It.

Where Learning Gets Its Spark.