The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines. The instrument may have originated in ...

For example, let's say you're going on a road trip with a friend and you want to pitch in for gas. 03:58 You might hand them some cash and say, "Gasorin-dai no tashi ni shite." (Let me pitch in ...

Math and Disney come together in this Frozen-themed Abacus Junior, which comes with 50 vibrant beads for an entertaining and ...

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 Russian abacus (tchoty) is held so that counters move crosswise. It has no crossbar, and all counters in one row have the same value. Most rods have ten counters. An occasional row has fewer, to ...