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 ...

Long before the Sudoku number puzzle became the crack cocaine of brain teasers, a bored Benjamin Franklin jotted down a couple of much more complex number puzzles of his own. But, exactly how the U.S.

is a math professor at Harvey Mudd College, but he's got a side gig, too: as a magician. His new book, "The Magic of Math," combines his two passions — which actually have a lot in common.

Sometimes the easiest, simplest way to liven up a party, sleepover, family gathering or presentation to a class is to perform a magic trick. Most magic tricks require fancy costumes and props, but ...