Wipe - Clean Add & Subtract | Yoyo Books

Add and subtract to become a math pro in no time! Use the water-based pen to fill in your solutions, then pull the tabs to check if you got it right.
Ready to practise some more? Just erase with a damp cloth and start again.

• Simple and interactive way to learn how to add and subtract
• Repetition: solve, pull the tab, erase and start over!
• Water-based pen included