Activities/Abacus: Difference between revisions
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File:Schety.png|schety (Russian) | File:Schety.png|schety (Russian) | ||
File:Nepohualtzintzin.png|nepohualtzintzin (Mayan) | File:Nepohualtzintzin.png|nepohualtzintzin (Mayan) | ||
File:Abacus-highlight.png|The beads moved most recently are highlighted. | |||
</gallery> | </gallery> | ||