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Imaginary Abacus - Instruction Book
Paul Green
Imaginary Abacus - Instruction Book
Paul Green
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.
Médias | Livres Paperback Book (Livre avec couverture souple et dos collé) |
Validé | 15 octobre 2017 |
ISBN13 | 9781978043497 |
Éditeurs | Createspace Independent Publishing Platf |
Pages | 102 |
Dimensions | 216 × 279 × 5 mm · 258 g |
Langue et grammaire | English |
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