Make your own abacus (and use it)!
Challenge Island - Oakland County East
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Make your own abacus (and use it)!
2 820 просмотров · 5 лет назад
Challenge Island - Oakland County East
38 подписчиков
2 820 просмотров · 5 лет назад
Learn how to work an abacus, and how to make your own, in this week's STEAMtastic Friday video from Challenge Island - Oakland County East! (created 7/31/20)
