Under fire for easing standards and creating a generation of educational slackers, some Japanese schools are finding a new use for a tool from the days of the samurai. The abacus is making a comeback.

Parents in Japan who are having their children start early on learning the abacus hope that it will improve both calculation and concentration. A survey conducted by the abacus education organization ...

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 ...