Mental Arithmetic Book with Abacus

Mental Arithmetic Book

Mental arithmetic is a mental sport with great benefits.

Including raising the level of concentration, thinking and self-confidence

The child will learn how to solve a 10-digit arithmetic operation (without rules) using an abacus.

A mental 9-digit process.

In addition to several intelligence and thinking skills at the end of each lesson.

The educational counter product is attached with the book.