Mental arithmetic. Learn mathematics using Abakus

Doesn"t your child like mathematics at all? He is ready to burst into tears every time he is asked how much two two will be?
Mental arithmetic will be your salvation. Having mastered it, your son or daughter will add and subtract five -digit numbers faster than the calculator!
But do not rush to hire a tutor and do not waste precious time and money on a special school. In this book you will find a full course of classes on this unique technique at the price of one lesson!
Using mental arithmetic, the child can:
- quickly count in the mind,
- It is better to concentrate attention,
- Train memory,
- develop figurative thinking.
The main thing is to do regularly and with pleasure. Very soon, your little windoderkind will surprise everyone!