Imaginary Abacus - Instruction Book - Paul Green - Knihy - Createspace Independent Publishing Platf - 9781978043497 - 15. októbra 2017
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Imaginary Abacus - Instruction Book

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€ 26,49

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Learn to add and subtract in your head by imagining an abacus to calculate the result. Example: Learn to calculate 415-350+233-155+44 quickly, just by imagining an abacus. This book will teach you the skills required to firstly use the actual abacus effectively, then how to use an imaginary abacus (also known as a mental abacus). To follow this book you will need: 1) A Japanese abacus (with at least 13 columns). 2) The accompanying workbook 'Imaginary Abacus - Workbook' (sold separately). This useful and impressive skill would be an asset for anyone.

Médium Knihy     Paperback Book   (Kniha s mäkkou väzbou a lepeným chrbtom)
Vydané 15. októbra 2017
ISBN13 9781978043497
Vydavatelia Createspace Independent Publishing Platf
Strany 102
Rozmery 216 × 279 × 5 mm   ·   258 g
Jazyk Angličtina  

Viac od Paul Green