For years, mathematics has been taught to many children as a subject of abstract numbers, formulas and procedures, something to be memorised and reproduced on paper. But the abacus is offering a ...

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, ...

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 ...