Next time you're forced to take a vision exam at the DMV, take a moment to appreciate the complex math that went into the eye chart. What seems like a fairly straightforward way to assess eyesight is ...

All kinds of parameters can be described using complex numbers of the form real + j * imaginary. The numerical values of real and imaginary can vary over very wide ranges. Trying to graph them ...

Gyaltsan (center) teaches students how to use his multiplication chart at a primary school in Lhasa, Tibet autonomous region. [Photo by PALDEN NYIMA/CHINA DAILY] Gyaltsan, a Tibetan man from Nyingchi ...

Students in the United States continue to fall behind students in other OECD countries in math and science. The National Science Foundation has prepared two charts that show the average math and ...