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Soroban in Various Number Systems

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Visit this site: http://www.cut-the-knot.org/Curriculum/Arithmetic/Soroban.shtml
Author:Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Description: A Java simulation of Soroban--the Japanese analogue of the traditional abacus and the Chinese Suan Pan. This is the most economical tool of the three.
Levels: Late Elem. (3-5), Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Simulations, Web Interactive/Java
Math Topics: Basic Operations, Place Value

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