The abacus is considered the oldest calculating device used by humans but in the 1940s, a Korean man invented an abacus-like counting method using fingers called jisanbeop or chisanbop, a term that ...

TOKYO -- An app developed in Japan for people to learn the abacus-method of math calculation skills is gaining global popularity, with more than 8,000 students at home and abroad using the app to ...

A learning center is teaching kids, aged three to 13 years old, how to learn and better appreciate math with the use of an abacus, a manual computing device, that helps them keep track of numbers and ...