Calculation methods for counting (Abacus, Maya...)

World > Education
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2010-11-26 11:11:32
Compare Soroban abacus vs Suanpan abacus vs Maya numerals
Soroban abacusSuanpan abacusMaya numerals
Videohttp://www.youtube.com/watch?v=Px_hvzYS3_Yhttp://www.youtube.com/watch?v=CvsnftXXKdwhttp://www.youtube.com/watch?v=cVPOSvPNn28
Wikipediahttp://en.wikipedia.org/wiki/Sorobanhttp://en.wikipedia.org/wiki/Suanpanhttp://en.wikipedia.org/wiki/Maya_numerals
CivilizationJapaneseChineseMaya
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