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A handmade abacus tracks thousands and handles multiplication

This experiment builds and tests an abacus as a tool for handling the large quantities that growing communities needed to ...

My son who struggles with multiplication tables and my daughter who learned them through songs. A story about realizing that the same teaching method doesn't wor…

Hello! This is 'Dad's Independent Research.'!Suddenly, how did your children learn their multiplication tables?Rote ...
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Use Your Fingers: The Abacus Just Might Improve Your Arithmetic Abilities

When I was a kid learning arithmetic the only visual aid I remember is flash cards. These were useful for memorizing single-digit addition and multiplication, but is memorization really the best ...

#35 Is it precisely because I'm bad at classroom lectures that I can perform super-fast mental arithmetic by using an imaginary abacus that isn't even there?

It was probably about two weeks ago. I watched a YouTube Short video. It was a mental arithmetic video from the Raiju Channel ...