THE RED PILL

DIALOGUE AND DISCUSSION ON EDUCATION, ENVIRONMENT AND RACE

 

How to Use an Abacus

http://m.wikihow.com/Use-an-Abacus

I did not know multiplication is simple on an abacus.

That it can be used across mathematic bases.

(Several virtual abacuses are available as phone apps, for practicing)

Views: 10

▶ Reply to This

© 2024   Created by Adisa.   Powered by

Badges  |  Report an Issue  |  Terms of Service