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 ...

Chinese Zhusuan is a time-honoured traditional method of performing mathematical calculations with an abacus. By moving beads along rods, practitioners can perform addition, subtraction, ...

Editor's note: Chinese Zhusuan refers to the knowledge and practice of performing arithmetic calculations using an abacus. It was added to UNESCO's Intangible Cultural Heritage list in 2013, becoming ...

China's Zhusuan or the knowledge and practice of arithmetic calculation using an abacus, has been nominated by UNSECO for competition to be listed as World Intangible Cultural Heritage. The final ...

If you have picked up an abacus from a thrift store and watched your toddler play with the beads, like I have, and wondered if that's all there is to it, read on. Using an abacus ("soroban"), that ...

Chinese Zhusuan is a time-honoured traditional method of performing mathematical calculations with an abacus. Practitioners can perform addition, subtraction, multiplication, division, exponential ...