Abacus in Various Number Systems
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|Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny|
|A Java simulation of the traditional abacus. Allows calculations in various number systems. The base ranges from 2 to 20. The tool inforces carry helping students grasp the idea of the positional, decimal in particular, number system.|
|Levels:||Late Elem. (3-5), Middle School (6-8)|
|Resource Types:||Simulations, Web Interactive/Java|
|Math Topics:||Basic Operations, Number Sense/About Numbers|
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