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 ...

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Bhubaneswar, Aug. 2: She may be just 10-years-old, but Rini can correctly add up 10-digit numbers in just a few seconds. Eight-year-old Nikhil can complete up to fifty math sums in five minutes flat.

What's the News: Most of us need everyone to stop talking when we perform mental math. But for children trained to do math visually with a "mental abacus," verbal disturbances roll off their backs, ...