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Abacus
Free Math Powerpoints for Kids and Teachers
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Abacus – To Understand the Numeration
The Chinese Abacus – Mental Math for Creative and Analytical Thinking
The Chinese Abacus and Number Sense
Putting the Pieces Together – Chinese Inventions
The Use and History of the Abacus
See Also: Counting, Addition, Subtraction, Multiplication, Division
For Kids
A Brief Introduction to the Abacus
Free Online Math GAMES & Kids Sites