Dan Finkel runs Math for Love with his wife, Katherine Cook. They have developed two games: Tiny Polka Dot: A math-enriched card deck for 3- to 8-year-olds. “It’s really flexible,” Finkel said. You ...

FIRST OF TWO PARTS — Most people don’t associate math with fun. Video games, on the other hand — whether Angry Birds, World of Warcraft or good old Pac-Man — send the fun meter berserk. U.S. video ...