Vinaya Kulkarni said she believes she has the program that will help grade-school age children gain confidence and competence in arithmetic. Kulkarni is the founder and head teacher of Abacus West, ...

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 ...

Ever dreamt of solving math problems in your head with the speed of a calculator? Mental math might seem challenging, but it's a skill attainable through the right tools and techniques. The abacus, an ...