Quick calculation of hand and brain was born in 1999. This is a folk invention. Because of its amazing computing speed, it has attracted the enthusiastic pursuit of parents for many years.

We introduced abacus mental arithmetic before, and abacus mental arithmetic is based on abacus. Through the accumulation of abacus operation for a long time, a complete abacus operation mechanism is formed in the child's brain, thus achieving the effect of rapid calculation.

Similar to abacus mental arithmetic, hand-brain quick calculation is an efficient, fast and simple calculation method with two hands and two brains, which can enable children aged 4- 13 to quickly complete the addition, subtraction, multiplication, division, multiplication and lookup of any number. It is 5- 10 times faster than other fast calculations, and the speed can exceed that of calculators. At the same time, it can make the left and right brains develop in a balanced way and effectively develop the potential of the whole brain.

Hand-brain quick calculation takes children's hands as tools, replacing the "abacus" in abacus mental calculation, and also endowing abstract numbers with shapes. Children can disassemble and assemble scores by hand and master the method of fast calculation in repeated operations.

This method turns complex calculation into simple operation and counting, and it is an efficient, fast and simple calculation method with two hands and two brains. It allows children to quickly master the addition, subtraction, multiplication and division of any number, and the speed can exceed that of a calculator.