Author: Wang Jia-shen
Publisher:
Publishing Date: 2003-08-01
Features: This book includes three parts: Theory of Abacus, Abacus Techniques, and Abacus Mental Calculation Techniques. It provides guidance, practicality, and operability for learning this skill, supplemented by special exercises. Appendix: Grading and Rank Standards for Abacus and Abacus-based Mental Calculation.
New computing technology: Abacus and mental abacus
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