Trachtenberg Speed System of Basic Mathematics
Inbunden, Engelska, 1982
1 539 kr
Beställningsvara. Skickas inom 10-15 vardagar. Fri frakt för medlemmar vid köp för minst 249 kr.
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.
Produktinformation
- Utgivningsdatum1982-02-04
- Mått140 x 216 x 21 mm
- Vikt454 g
- FormatInbunden
- SpråkEngelska
- Antal sidor272
- FörlagBloomsbury Publishing Plc
- ISBN9780313232008
- ÖversättareAnn Cutler, Rudolph McShane