What is ABACUS?
An abacus is a device used for mathematical calculations –addition, subtraction, multiplication and division. There are two basic forms for the abacus; a specially marked flat surface used with counters (counting table) or a frame with beads strung on wires.
Then name abacus derives from the Greek word “abax” meaning table or board coverd with dust. The origins of the abacus are traced to the early Middle Ages in the Middle East. The model developed during that period had a wooden frame with several wires, each strung with 10 beads.

It is known that in its ‘modern’ form seven beads per string- the abacus appeared in China between the 12th and 13th century AD.

Student say that Chinese took gives them that winning edge

Abacus is no longer just a calculating tool for performing arithmetic processes. This Chinese tool seems to have won many fans here, both among parents and children. Students completing all the levels, which vary from ten to twelve, are finding it easy to crack competitive exams, mostly the ones that involves mathematical skills – at least that is what parents and teachers will tell you.
Due to its unconventional mode of teaching, abacus helps a person to understand arithmetic functions better that any other way – thanks to the colorful beads of abacus, that help in understanding calculations and in giving a good foundation. At a time when parents do not bat an eyelid to spend a few thousands for enrolling their children in summer camps, that may not do much to improve their skills – abacus learning, even though it comes at a price, can do some good.

Source: bangaloremirror