Archive for 'Math'
Jul 13
Arcane abacus geekery.
My brother has been into abacuses all my life. He recently told me he’d found an obscure paper from over 100 years ago on cube roots and was working on translating it to modern abacus technique. (I hadn’t known that abacus technique changes over time, but apparently it does.) He seems to [...]
Posted: under Education, Family, Math, Technology, Toys . Comments: 11