The abacus is as useful and effecient a machine today as it was when it was first created centures ago. Whether you're an expert in the latest computer technology or you're mastering arithmetic and word problems for the first time, it won't take long to learn the basics (and even the not-so-basics) of adding, subtracting, multiplying, and dividing on this ingenious and fun-to-use mathematical tool.
The Abacus: The World's First Computing System: Where It Comes From, How It Works, and How to Use It to Perform Mathematical Feats Great and Small
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Book Details
Author(s)Jesse Dilson
PublisherSt. Martin's Griffin
ISBN / ASINB00DXIBPM8
ISBN-13978B00DXIBPM2
MarketplaceUnited Kingdom 🇬🇧