Can you really trust your mind? Explore the brain-twisting science of thinking, feeling, and memory with this mind-boggling book.

A smart way to teach children to think logically and creatively One of the most precious gifts you can offer a child is a sharp mind. The 56 puzzles in this del

Last June in New York City, U.S. and foreign teams dazzled each other with all types of clever language- and culture-neutral puzzles in the first World Puzzle C

Educational title for gifted and advanced learners.

Get smart--give your brain a super-sized workout that's fun, challenging, and mind-expanding! You'll really have to keep your wits about you as you tackle six b