Book of Donmon Teith

This book will teach you step-by-step how to perform addition and subtraction on a Japanese abacus. Clearly explained with text and colored pictures throughout

(Black & white version of the original colored version). This book will teach you step-by-step how to perform addition and subtraction on a Japanese abacus. Cle

Learn how to add, subtract, multiply, divide and find square roots with this easy to use instruction guide. There are many sample problems with step-by-step ins

This book will teach you step-by-step how to perform addition, subtraction, division, multiplication, square roots and practical examples on a Japanese abacus.

Abacus Mind Math Instruction Book Level 1 (for teachers and parents): Goal for Level - 1 Addition - without carryover problems Subtraction - without borrowing p