Peter Cade / Getty Images An abacus is a calculation tool used by sliding counters along rods or grooves in order to perform mathematical functions. In addition to calculating the basic functions ...

When her child turned one, Akiko decided to make a move. A Sydney-based Japanese abacus teacher Akiko (left) held an event with a Japanese national champion of Japanese abacus, who visited Sydney ...

The abacus has taken many forms over the centuries. In Medieval and Renaissance Europe, merchants commonly did calculating by moving wooden or metal counters along lines drawn on a wooden table known ...