Who says education can't be a lot of fun? There's a growing movement in classrooms to play the KenKen arithmetic logic puzzles invented by a Japanese math teacher named Tetsuya Miyamoto. The game, ...

You and I go out to eat at a conveyer-belt sushi restaurant. It serves four types of sushi: ahi roll, Boston roll, caterpillar roll and dragon roll. We each have access to our own conveyer belt that ...