{"product_id":"imaginary-abacus-instruction-book-paul-green-9781978043497","title":"Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction using an imaginary Japanese abacus (Soroban).","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.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Paul Green\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 197804349X\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781978043497\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Createspace Independent Publishing Platform\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 10\/15\/2017\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 102\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.57lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 11.00h x 8.50w x 0.21d","brand":"Paul Green","offers":[{"title":"Paperback","offer_id":43991299064063,"sku":"9781978043497","price":21.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_788afd75-82e5-49e1-84dc-168f50e60a32.jpg?v=1683309500","url":"https:\/\/www.whiterainbookhouse.com\/products\/imaginary-abacus-instruction-book-paul-green-9781978043497","provider":"WR Book House","version":"1.0","type":"link"}