Above: Wang Sihan (right) tutors an elementary school girl with language developmental delays through a volunteer program at Shaoxing University in Shaoxing, Zhejiang province. Right: Yu Lingfei ...

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 ...

When you count to 20, you start at 1 (or zero) and count on until you reach 20. Each number is one more than the last. When you count back from 20, you start at 20 and count back until you reach 1 (or ...

Abstract: Background subtraction is a widely used approach for detecting moving objects from static cameras. Many different methods have been proposed over the recent years and both the novice and the ...