The Trachtenberg Speed System of Basic Mathematics

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ISBN 10: 0285629166 / ISBN 13: 9780285629165

Edité par -, 1989

The Trachtenberg Speed System of Basic Mathematics This book is in very good condition and will be shipped within 24 hours of ordering. The cover may have some limited signs of wear but the pages are clean, intact and the spine remains undamaged. This book has clearly been well maintained and looked after thus far. Money back guarantee if you are not satisfied. See all our books here, order more than 1 book and get discounted shipping. N° de réf. du vendeur 7719-9780285629165

Synopsis :

Do high-speed, complicated arithmetic in your head using the Trachtenberg Speed System.

À propos de l'auteur: Jakow Trachtenberg was a Jewish mathematician who developed the mental calculation techniques called the Trachtenberg system. He was born in Odessa, the Russian empire in 1988 and worked as an engineer in the Obukhov arms factory. He was a dedicated pacifist and instrumental in organising the Society of Good Samaritans when the First World War broke out. After the Russian revolutions of 1917, Trachtenberg fled to the Weimar Republic where he was later critical of Nazi policies and imprisoned in a concentration camp during World War II. He developed his system of mathematics during his imprisonment. He died in 1953.

Détails bibliographiques

Titre : The Trachtenberg Speed System of Basic ...
Éditeur : -
Date d'édition : 1989
Reliure : paperback
Etat : Very Good