From: Damien Thorne
To: Teacher2Teacher Public Discussion
Subject: Re: Hand as abacus
The method you are referring to is called chismbop. (You might want to check my spelling.) There is very little found on the web about this type of mathematical Computation method, but I found one page with some information. http://www.tsbvi.edu/publications/abacus.htm I hope this helps you in your search. Good luck.
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