Learn to Add and Subtract with a Japanese Abacus - Paul Green - Bog

The book explains how to quickly learn how to use the Japanese Abacus. Instructions on how to effectively master the essential elements needed for addition and subtraction. Examples are shown for each section with clear graphics on how to proceed. Learning the Abacus:1. Strengthens mental visualization2. Sharpens concentration3. Improves academic results4. Enforces problem solving techniques. Great for both children and adults. This useful and impressive skill would be an asset for anyone.