End of Year Math Mystery (GRADE 1)

End of Year Math Activity: End of Year Math Mystery – Case of The Graduation Gremlins (GRADE 1) – Engage and motivate your students during math time with this fun End of Year activity!

Optional Video Hook is available to use when introducing this activity. View the video for free in the video tab below.

Students must use their math skills to eliminate places so they can find out where the Graduation Gremlins are hiding!

There are 5 clues to crack to solve the mystery:

Clue 1: Addition (1-20)
Clue 2: Subtraction (1-20)
Clue 3: Reading Clocks and Writing Digital Times (o'clock only)
Clue 4: Comparing Numbers (circle the lesser number)
Clue 5: Making the number 15 (using addition and subtraction)

Pack also includes a mystery declaration sheet, answer sheets, elimination guide and awards.


This End of Year math mystery is available for Grades 1-6.

*US Spelling used. If you need spelling variations for AUS/UK Spelling, please contact me on jjresourcecreations@gmail.com