Saturday, November 13, 2010

Old abacus

2 comments:

  1. Anonymous11/14/2010

    About 32 years ago, I learned to do addition, subtraction, multiplication and short division on an abacus like this (though mine was plastic, not wooden). It has come in so handy in later life! Not.

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  2. We were taught to add and subtract. I thought it was interesting.

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