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The nepohualtzintzin is a Mesoamerican Abacus That Gives Modern Calculators a Run for Their Money
globalvoices.orgThe nepohualtzintzin is a calculation device used in pre-Hispanic Mesoamerican cultures, including the Mayans, that is now making a comeback in several education programs, which are making use of this powerful tool to teach mathematics at an early age in a completely organic way.
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