"...We used a wooden board and pegs though..." They still do. | Hacker News

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		bilbo0s on March 6, 2013 \| parent \| context \| favorite \| on: Teaching Square Roots to a Five Year Old "...We used a wooden board and pegs though..." They still do.

murbard2 on March 6, 2013 [–]

But they used to too.

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