March 16, 2010

Fun with math

Anno's Magic Seeds

A gift from a wizard makes Jack's fortune grow by ones and twos, then threes and fours, challenging the reader to keep track of his riches.
A clever math book for kids who enjoy brain teasers.

An introduction to factorials, which help to express very large numbers.
Inside the amazing multiplying jar, numbers grow rapidly, as demonstrated by Anno's detailed illustrations.

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