You can add , subtract , multiply and division. Cultivate flexible hands (muscle ), eye ( the concept of six surface) for children's intellectual development , coordination of the brain ( spatial thinking ) , as well as the ability to use clues to solve the problem.

This is for a bulk lot of 30. Enough for the whole class. If you want more or less let me know and I will do an auction up for you.

Sell well at markets and fairs.

I sell them for $4.95 on trademe and my website