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→Yupana
[[File:Yupana-origins.png|300px|From http://en.wikipedia.org/wiki/File:Yupana.jpg]]
[[File:Yupana-origins.png|300px|From http://en.wikipedia.org/wiki/File:Yupana.jpg]]
Yupana is an Incan counting device similar to an abacus.
Yupana is an Incan counting device similar to an [[Activities/Abacus|abacus]].
[[File:Yupana.png|300px]]
[[File:Yupana.png|300px]]