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 The Trachtenberg Speed System of Basic Mathematics

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MEGAKING ATEROTH
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PostSubject: The Trachtenberg Speed System of Basic Mathematics   Sun Jan 27, 2008 2:03 am

The Trachtenberg Speed System of Basic Mathematics.pdf
(Ann Cutler & Rudolph McShane) 1960
Power Math (Trachtenberg instruction & practice DOS software)
by Sherman Keene 1994
PowerMath provides all the instructions you need to learn the method, and then self-checking exercises to perform.


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