Description

Get ready for Valentine’s Day with this Valentine’s Day Math Mystery 1st grade Activity! ‘The Case of the Vanishing Valentines’ is a high-engagement February math activity that turns a 1st-grade review into an exciting case-solving mission.

It’s the perfect no-prep math activity! 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).

 

Valentine’s Day Math Mystery 1st Grade Activity

 

To find the vanishing valentines, students must unlock five clues by correctly solving:

• Clue 1: Read & Write Time (O’Clock & Half-Past)
• Clue 2: Addition within 20
• Clue 3: Place Value – Adding Tens and Ones with Base Ten Models
• Clue 4: Subtraction within 20
• Clue 5: Missing Addends (Up to 15)

 

Flexible for Any 1st Grade Classroom

 

Use this versatile Valentine’s Day math activity 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 1st Grade Math Review

 

Q: Is this just a Valentine’s Day math activity for 1st grade? A: This mystery has a fun “Vanishing Valentines” theme, making it the perfect February math activity. However, it’s a powerful 1st grade math review printable that you can use any time of year!

Q: What skills does this mystery cover? A: This is a comprehensive review. Students will practice telling time to the o’clock and half-past, addition and subtraction within 20, 1st grade place value (tens and ones), and finding missing addends.

 

 

Looking for more 1st Grade adventures?

• •  Check out more 1st Grade Math Mysteries here!

  •  You may also like to check out our Junior Reading Mysteries too!

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A complete answer key and printable awards are included!