An accessible guide to mathematical calculation reveals the secrets of rapid mental calculation, memorization, and other feats of the mind, with tips on how to add, subtract, multiply, divide, and work with fractions, squares, and cube roots. Original. 15,000 first printing.[...]

With dazzling attention to this president's life, the social tapestry of his times, and the political dynasty he was born to which ushered in big government, Calhoun compellingly reconsiders Harrison's legacy.[...]

Demonstration of the use of simple counting arguments to describe number patterns; numerous hints and references.[...]