Description

By (author) Trachtenberg Jakow; Translated by Cutler Ann; Translated by McShane Rudolph

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

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Do high-speed, complicated arithmetic in your head using the Trachtenberg Speed System.Ever find yourself struggling to check a bill or a payslip? With The Trachtenberg Speed System you can. Described as the ”shorthand of mathematics”, the Trachtenberg system only requires the ability to count from one to eleven. Using a series of simplified keys it allows anyone to master calculations, giving greater speed, ease in handling numbers and increased accuracy.Jakow Trachtenberg believed thateveryone is born with phenomenal abilities to calculate. He devised a set ofrules that allows every child to make multiplication, division, addition,subtraction and square-root calculations with unerring accuracy and atremarkable speed. It is the perfect way to gain confidence with numbers.

Review quote:
Teachers should read this book … which could well revolutionise the teaching of mathematics in the future

Review quote:
Even in the age of the calculator this new … edition is well worth reading and the challenge of teaching the method to children who find arithmetic difficult is one which an adventurous teacher might well find rewarding

Biographical note:
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.

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