Description

Save the day with this Valentines Day Math Mystery 3rd Grade Activity! ‘The Case of the Heartbroken Heroes’ is a high-engagement activity that makes reviewing perimeter and fractions far more exciting than a standard worksheet.

It’s the perfect no-prep math activity! This resource is loaded with options, including an optional video hook to set the stage!

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).

Valentines Day Math Mystery 3rd Grade Activity

To heal the broken hearts, students must unlock five clues by correctly solving a complete math review:

• Clue 1: Adding 50 to Double and Triple-Digit Numbers (Mental Math)
• Clue 2: Dividing by 2s and 5s
• Clue 3: Perimeter (Finding the perimeter of shapes – Customary & Metric options)
• Clue 4: Fraction Models (Writing fractions from shaded shapes)
• Clue 5: Price Lists (Adding whole number prices)

Flexible for Any 3rd Grade Classroom

Use this versatile Valentines Day math worksheets alternative for:

• A fun spiral review
• Math centers or stations
• 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 2+ hours, depending on your students’ skill level. We recommend pacing it by one clue at a time.

Common Questions for this 3rd Grade Math Review

Q: What skills does this mystery cover?
A: This is a comprehensive review. Students will practice calculating perimeter, identifying fractions, and solving division facts (2s and 5s).

Q: Is this better than a normal worksheet?
A: Absolutely. Standard February math worksheets can be dry. This activity adds a narrative, a suspect list, and video hooks to keep students motivated to solve every problem.

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.

Your 3rd Grade Valentine’s Hub

Don’t stop at just one mystery! Check out our other 3rd Grade Valentine’s Day Math Mysteries:

• The Case of The Vanishing Valentines
• The Case of The Valentine Villain
• See Other 3rd Grade Math Mysteries

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A complete answer key and printable awards are included!