The Trachtenberg Speed System of Basic Mathematics
Fotografii de Rudolph Matas McShane Traducere de Ann Cutler, Rudolph McShaneen Limba Engleză Hardback – 31 ian 1982
The complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy.
This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.
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Specificații
ISBN-13: 9780313232008
ISBN-10: 0313232008
Pagini: 272
Dimensiuni: 147 x 218 x 24 mm
Greutate: 0.42 kg
Editura: Praeger
ISBN-10: 0313232008
Pagini: 272
Dimensiuni: 147 x 218 x 24 mm
Greutate: 0.42 kg
Editura: Praeger
Descriere
The complete system of the Trachtenberg method of mathematics which makes possible high-speed arithmetical calculations with a remarkable degree of accuracy.
This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.
This method is not only speedy but simple. Once one has mastered the rules, lightning calculation is as easy as reading a story. It looks like magic, but the rules are based on sound logic.