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Yupana Inka - Inka's Math Rediscovery
Yupana Inka - Inka's Math Rediscovery
Booth: 2929
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Rediscover the Inca's Math !
Come and meet the only math method in the world that is operated with the right side of the brain ! Yupana Inka: The Inca calculator. Add without adding at all ! subtract with many minuends an...
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Engineer, Inka's Math researcher &writer
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