How to Use an Abacus (with Pictures) - wikiHow
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The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world. It's a useful learning device for the visually impaired, as well as for anyone who wants to learn the roots of the
The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world. It's a useful learning device for the visually impaired, as well as for anyone who wants to learn the roots of the
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4 Ways to Teach Your Kid Adding and Subtracting - wikiHow
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3 Ways to Memorize Numbers - wikiHow
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Abacus Tutorial: 1 Basic function
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How to Make an Abacus: 11 Steps (with Pictures) - wikiHow
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How to Multiply With Your Hands: 11 Steps (with Pictures)
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How to Make an Abacus: 11 Steps (with Pictures) - wikiHow
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13 Ways to Improve Mental Math Skills - wikiHow
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How to Be Good at Mathematics (with Pictures) - wikiHow
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