Showing posts with label number. Show all posts
Showing posts with label number. Show all posts
Monday, March 16, 2009
Monday, October 1, 2007
Standard Abacus
Try this abacus out. See if you can work out how to show different numbers on the abacus. Can you work out how to do addition and subtraction with it? What about multiplication and division?
Standard Abacus
Standard Abacus
Monday, August 20, 2007
Subscribe to:
Posts (Atom)