Someone just pointed me at a video on YouTube showing an interesting graphical multiplication technique using intersecting lines. Of course, the problem with YouTube is that once you're there, you see ...

Egyptians believed that the pyramids of Giza were like math marvels, built on the principles of pi. The fun fact about this pi connection? Well, imagine this: The height of each pyramid concurs with ...

Start with a deck of cards. Before the trick, sneak a peek at the 10th card in the deck. Memorize it. Ask your volunteer to add the first and second digit of their number together. For instance, if he ...

Math Smarts: Tips, Tricks, and Secrets for Making Math More Fun! by Lynette Long, illus. by Tracy McGuinness, does just that, with clever aids such as a cardboard ""Smart Chart"" that slides to reveal ...