The Trachtenberg Speed System of Basic Mathematics by Ann Cutler, Rudolph McShane

The Trachtenberg Speed System of Basic Mathematics

Ann Cutler, Rudolph McShane

270 pages • first pub 1960 (editions)

nonfiction mathematics reference science informative medium-paced
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Jacob Trachtenberg was born in 1888 and invented his system of mental mathematics while imprisoned in a Nazi concentration camp during WW2 and founded the Mathematical Institute in Zurich in 1950 to teach his new method of understanding mathematic...

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