Baby Shark Subtraction
A reusable cardboard math game where a shark eats fish off a sliding strip. Subtraction practice that feels like a toy.
How to do it
- 1
Draw a shark on cardboard and cut it out.
- 2
Cut a long strip of white paper and put small fish stickers along it.
- 3
Tape two cardboard guides on the back of the shark to make a sliding track for the strip.
- 4
On a second piece of cardboard, paste the shark on top and draw a math equation space at the bottom.
- 5
Cover the equation space with clear tape so it acts like a dry-erase board.
Tips & extensions
More than a parenting blog
Simply Play is your personal activity library. Save what you love, plan your week, and log what you did.
Save favorites
Bookmark activities and build a library you can come back to.
Plan your week
Add activities to your weekly planner and see them all in one place.
Log it together
Record when you do an activity, share photos with other families, and earn badges along the way.
Already have an account? Sign in



