How to use the abacus became a compulsory subject at elementary schools in Japan in 1935. Today, soroban lessons are included in math classes for third- and fourth-graders. In 1986, there were ...

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 ...