This is a workbook for abacus math. It contains single digit arithmetic addition and subtraction with step-by-step directions for each individual abacus rule al
This is a workbook for abacus math. It contains double digit arithmetic addition and subtraction with step-by-step directions for each individual abacus rule al
This is a simple guidebook for people who are interested in learning the introduction of how an Abacus works. The book includes simple explanation of the theory
Basic Abacus Math is your perfect guidebook to be a proficiently capable abacus user. Our exercise will translate the way you look and think of numbers by visua
Abacus Mind Math Instruction Book Level 1 (for teachers and parents): Goal for Level - 1 Addition - without carryover problems Subtraction - without borrowing p