Brian Butterworth is on a crusade to understand the number deficit called dyscalculia — and to help those who have it. In the mid-1980s, Paul Moorcraft, then a war correspondent, journeyed with a film ...

The online computer game “Is this prime?” tests a player’s knowledge of prime numbers—and just surpassed 2,999,999 attempts. Give it a whirl. The Greek mathematician Euclid may very well have proved, ...

All the Latest Game Footage and Images from Number Munchers Munch on Math! Help your Muncher avoid the mischievous Troggles as you maneuver through the gameboard, munching on multiples, factors, prime ...