| Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction using an imaginary Japanese abacus (Soroban). Contributor(s): Green, Paul (Author) |
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ISBN: 197804349X ISBN-13: 9781978043497 Publisher: Createspace Independent Publishing Platform OUR PRICE: $20.05 Product Type: Paperback - Other Formats Published: October 2017 |
| Additional Information |
| BISAC Categories: - Education | Learning Styles - Study Aids | Study & Test-taking Skills - Mathematics | Counting & Numeration |
| Physical Information: 0.21" H x 8.5" W x 11" (0.57 lbs) 102 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: 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. |