http://go-away-ira.livejournal.com/ ([identity profile] go-away-ira.livejournal.com) wrote in [personal profile] go_away_ira 2008-05-17 08:05 pm (UTC)

Посмотрите, если интересно, как учили дробям в России 2000 лет назад http://ilib.mirror1.mccme.ru/djvu/klassik/1804.htm
Какие задачи с места в карьер ! Изумительно.
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