Speed Math: The + Puzzle
Book Details
Author(s)
Prof. R Stinson
ISBN / ASIN
B00ILILZK2
ISBN-13
978B00ILILZK2
Sales Rank
#538,115
Marketplace
United States 🇺🇸
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Description
This book is about a new math puzzle, which I have invented, helps you to build speed, focus, memory etc. It has worked wonders for my students and hope it does the same for you.
