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|AbacusMaster sells a 17-rod soroban abacus and interactive tutorial software that covers abacus addition, abacus subtraction, abacus multiplication, and abacus division with more than hundred animated examples.|
|Resource Types:||Manipulatives, Instructional Packages/Games|
|Math Topics:||Arithmetic/Early Math|
The Math Forum is a research and educational enterprise of the Drexel University School of Education.