Mental Arithmetic

Mental arithmetic is a methodology for developing intelligence, based on the use of special counting tools – the abacus, with which a child will learn to count quickly in their head.

With the book "BUKVA-LAND", you can prepare your child for school and provide basic counting skills.

In the book, you will find:

• rules for using the abacus,
• the "Formula of Younger Companions",
• checking tasks.