**Abacus Mathematics and Smart Brain **

From the Greek word *abax,*
meaning "calculating board" or "calculating table," the
Chinese abacus was invented during the Yuan Dynasty, 1280-1368 AD. Often
referred to as the first computer, the abacus is used to add, subtract, multiply
and divide, as well as figuring fractions and square roots. In certain Asian
communities, abacuses are still being used to calculate invoices.

The new Abacus Mathematics system is very rapidly spreading and it is good to improve the child's Smart Brain.

Links

Introduction to Algebra - (Al Jabar Arabic mathematic system)

Algorithms - (Founded by Al Guaritmy - Arabic mathematician)