When I was a kid learning arithmetic the only visual aid I remember is flash cards. These were useful for memorizing single-digit addition and multiplication, but is memorization really the best ...

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 ...

For this series, we've been thinking a lot about some of the iconic objects that some of us remember using — if only for a short period of time — in our early schooling. Slide rules, the recorder, ...