Train Your Brain Cranium Crunchers Author:Robert Allen, Harold Gale, Carolyn Skitt Hey kids--are you ready to train your brains? This series of fun books will really let kids give their brains a workout! Designed by three puzzle-book pros and Mensa members, these brain-teasing books are brimming with mind-scrambling puzzles. In Cranium Crunchers, there's almost 100 pages of number stumpers, visual teasers, logic problems, and ... more »verbal tests. Split into three levels of difficulty--called Super Brain, Mega Mind, and Ultra Genius--the books get more challenging as they progress. Kids, adults, and anyone else who enjoys a good dose of mental calisthenics will find themselves hooked by each puzzle-solving challenge.« less