In today's fast-paced world, parents are constantly looking for ways to give their children an edge, especially when it comes to developing strong mental abilities. Two popular methods, Abacus ...

Bet you've never seen math magic like this. These kids in India are solving complex math problems on the abacus, a ...

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 ...

FORT LEE — For 10 seconds, a series of 50 random three-digit numbers flashed on the screen. After another second, abacus master Jeonghee Lee announced she'd finished the mental addition, correctly ...