(01-01-1970)


It can also be defined as a Brain Gym.A way to improve memory capabity.
Master Sayan Chatterjee(02-06-2010)

 

The name Abacus derives from the Greek word ABAX meaning table or board covered with dust.An abacus is a device used for addition and subtraction, and the related operations of multiplication and division. It does not require the use of pen and paper, and it's good for any base number system. 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 (bead frame).
MR. Sayan Ganguly(03-06-2010)

 

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