Chinese Abacus - cross curricular history and math lesson.  Place values, addition & counting.  This site has a good explanation of the history and use of the abacus.  Pretty cool and hands on idea for supplementary math instruction.

Math Activity Chinese Abacus - cross curricular history and math lesson. Place values, addition & counting. This site has a good explanation of the history and use of the abacus. Pretty cool and hands on idea for supplementary math instruction.

14k Gold Chinese Abacus Charm/Pendant 2.76g by GoldnBeads on Etsy

Gold Chinese Abacus Charm/Pendant by GoldnBeads on Etsy

vintage abacus antique soroban japanese abacus by TheTuftedChair

vintage abacus antique soroban japanese abacus by TheTuftedChair

The Abacus Bracelet | HaHa Bird

That calculator wristwatch you’re wearing isn’t retro enough for you anymore? Time to go waaaaay back in time with your wrist-worn calculating devices, all the way …

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