Photo Caption: A Japanese abacus (soroban) held over an older style Chinese abacus (suan pan). Photograph by Forrest M. Mims III. Can the old-fashioned one-room schoolhouse provide new lessons for ...
The abacus predates the alphabet and the invention of glass, but its use can help modern day students increase their math proficiency and understanding. Ulrich Boser, the author of Learn Better, ...
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