- Math Mysteries
- >
- Math Mysteries - 1st Grade
- >
- Valentine's Day Math Mystery 1st Grade Math Worksheets Printable & Digital

## Valentine's Day Math Mystery 1st Grade Math Worksheets Printable & Digital

**SKU:**HeartbrokenHeroes_1stGrade

**The Case of the Heartbroken Heroes**

Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download. *There's an optional Microsoft Powerpoint *version of* the worksheets with editable textboxes included for completing the worksheets digitally if that works better for you than the Google Classroom option.*

--> Plus a PowerPoint that contains the Worksheets as images with editable textboxes for those who use Microsoft.

Useful for a fun spiral math review session!

Students must use their math skills to unlock clues. Then, use their powers of deduction to narrow down the list of suspects to find the Valentine Villain and rescue the kidnapped pets!

Suggestion: Pace the clues one by one to keep the class at the same point. If using the clues in a different order, keep the suspect list away from students until all five clues are completed and discovered.

---------------------------------------------------------------------------------------------

Optional VIDEO HOOK available to use to introduce students to this math mystery activity. Check out the preview section to view the video.

------------------------------------------------------------------------

Preparation

- Print the student pages, staple or place in a folder, and your students are set to go.

- Have the video hook ready for viewing at the start of the lesson on an IWB, iPad or computer monitor screen.

- Digital: Make a copy for each student when assigning via Google Classroom or if using the PowerPoint, send it to your students as is for them to complete.

-----------------------------------------------------------------------------------------------

Math Skills Required to Unlock Clues

There are five clues to crack to solve the mystery:

Clue 1: Adding Three Addends (Single Digits only)

Clue 2: Comparing Numbers between 1-99

Clue 3: Greater than or less than 50

Clue 4: Subtract a single digit (1-5) from a double-digit number (no regrouping) - Vertical algorithm format

Clue 5: Subtract ten from double-digit numbers - Vertical algorithm format

Students must use critical thinking skills to figure out what the clue is telling them to eliminate from the list of possibilities. This is a great opportunity for a class/group discussion if there is ever a dispute in the deductive reasoning process.

----------------------------------------------------------------------------------------------

Multiple Uses

- Suitable for independent, pairs, or group work.

- Use as part of your math centers, add to your sub tubs, make it part of your early finisher tasks, give for homework, or make it part of your classroom practice/review sessions.

I recommend pacing this activity by giving students one clue at a time. Once the whole class has completed a clue, then move on to the next clue either within the same lesson or the next math session. New math content presented? Make a lesson out of it by modeling the math before diving into the clue. I like to say, "we must learn something new before attempting the next clue."

-----------------------------------------------------------------------------------------------

How long will this activity take?

Time to complete will vary anywhere between 30mins - 2 hours or more! It mainly depends on how familiar your students are with the math mystery format, as well as how difficult they find math skills covered in the particular mystery. Please check the math skills outlined in the clues above to help determine suitability for your class.

This Math Mystery is also available in a CSI Digital Mystery Game format that can be played on any device with an Internet Connection. The GAME option contains more graphics and is not the same style as the digital worksheets provided in the printable packets > CLICK HERE to learn more about this option.

## Valentine's Day Math Mystery: Case of the Valentine Villain - 1st Grade Edition

Valentine's Day Math Mystery: The Case Of The Valentine Villain - 1st Grade Edition. Engage and motivate your students while they use a variety of skills in these EASY PREP worksheets to help solve a crime!

**Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.**

--------------------------------------------------------------------------------------------

⭐Optional video hook included for introducing the case!

⭐BONUS: Ending video added to wrap up the case!

---------------------------------------------------------------------------------------------

## Valentine's Day Math Mystery: Case of the Heartbroken Heroes - 4th Grade Edition

Valentine’s Day Math Mystery: the Case of the Heartbroken Heroes. This math activity is a fun way to review and practice mathematical skills in the classroom or at home. Ideal for spiral review, consolidation, math centers, homework, enrichment, early-finisher or the sub-tub.

EASY PREP, print and solve!

**Distance Learning Update: **I've added a Word Document within the folder that contains a Google Doc link to share this resource with your students via Google Classroom or Drive.

Students must complete math worksheets to unlock clues. Then, use their powers of deduction to narrow down the list of possibilities to solve the mystery case!

## Valentine's Day Math Mystery: Case of the Heartbroken Heroes - 3rd Grade Edition

Valentine’s Day Math Mystery: the Case of the Heartbroken Heroes. This math activity is a fun way to review and practice mathematical skills in the classroom or at home. Ideal for spiral review, consolidation, math centers, homework, enrichment, early-finisher or the sub-tub.

**Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.**

Students must complete math worksheets to unlock clues. Then, use their powers of deduction to narrow down the list of possibilities to solve the mystery case!

## Valentine's Day Math Mystery: Case of the Heartbroken Heroes - 5th Grade Edition

Valentine’s Day Math Mystery: the Case of the Heartbroken Heroes. This math activity is a fun way to review and practice mathematical skills in the classroom or at home. Ideal for spiral review, consolidation, math centers, homework, enrichment, early-finisher or the sub-tub.

**Easy prep! Just Print & Solve! Or go paperless with the new Google Slides option provided within your download.**

Students must complete math worksheets to unlock clues. Then, use their powers of deduction to narrow down the list of possibilities to solve the mystery case!

## Valentine's Day Math Mystery: Case of the Heartbroken Heroes - 2nd Grade Edition

**Distance Learning Update: **I've added a Word Document within the folder that contains a Google Doc link to share this resource with your students via Google Classroom or Drive.