For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

The longevity of Jobs’ 10-minute design session suggests the approach worked. The calculator survived nearly two decades of ...

The longevity of Jobs’s ten-minute design session suggests the approach worked. The calculator survived nearly two decades of ...

The simple interest formula is Interest = P * R * T. Many, or all, of the products featured on this page are from our advertising partners who compensate us when you take certain actions on our ...

Helping students to develop math fluency takes more than just flash cards. It requires teaching them how to think about ...

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).

In 1982, a 21-year-old Chris Espinosa faced a familiar challenge in software design: satisfying Steve Jobs’ exacting eye.