Description
Fix the calendar glitch and save the fairy tales with this February Math Mystery 5th Grade activity! ‘The Case of the Friendship Fiasco’ is a high-engagement math review where students must solve clues to erase “February 30th” and stop Mathhattan from colliding with Tale Town!
It’s the perfect no-prep math activity for Valentine’s Day or any time in February! This resource is loaded with options, including an optional video hook and a NEW ending video (with voiceovers!) to wrap up the case!
Easy Prep for Print or Digital
This resource is designed to be low-prep for you and high-engagement for your students.
- Printable PDF Version: Just print the worksheets, staple, and go.
- Google Slides Digital Version: 100% paperless! Simply assign in Google Classroom. (Students must be in ‘edit mode’ to type).
February Math Mystery 5th Grade Activity
To find the Timekeeper’s Toolkit and restore order, students must unlock five clues by correctly solving these Common Core-aligned challenges:
- Clue 1: Geometry (Plotting and Identifying points on the Coordinate Plane – One Quadrant)
- Clue 2: Fractions (Multiplying Fractions – simplifying/reducing answers required)
- Clue 3: Measurement (Calculating Volume of Rectangular Prisms using the Formula V = L x W x H)
- Clue 4: Geometry (Classifying 2D Shapes based on properties)
- Clue 5: Decimals (Adding and Subtracting Decimals)
Flexible for Any 5th Grade Classroom
Use this versatile Valentine’s Day math worksheets as an alternative for:
- A Valentine’s Day party station
- Math centers during February
- Homework or enrichment
- Your “early finisher” tub
- A lifesaver for your sub-tub!
Pacing & Timing
This is a comprehensive review that can take anywhere from 30 minutes to 60 minutes. We recommend pacing it by one clue at a time, allowing students to eliminate suspects as they go!
Common Questions for this 5th Grade Math Review
Q: Is the Volume clue difficult?
A: Clue 3 focuses on Standard 5.MD.C.5. Students will apply the volume formula ($V = l \times w \times h$) to rectangular prisms. It’s great practice for moving beyond counting unit cubes.
Q: Do students need to simplify fractions?
A: Yes! In Clue 2 (Multiplying Fractions), students are expected to reduce fractions to their lowest terms to find the matching letter for the code.
Q: How does differentiation work with these?
A: That’s our secret weapon! Many of our stories are available for other grades, so you can “clue swap” with the 2-6 grade packs. We even have a blog post explaining how: learn how to differentiate here.
Other Grade Editions Available!
Love this ‘Friendship Fiasco’ theme? This mystery is also available for other grade levels (great for differentiation)!
A complete answer key and printable awards are included!








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