Logic & Brain Teasers, Puzzles 

Lateral thinking is the key to solving these tantalizing puzzles. Packed with hundreds of brain teasers and mathematical problems, the book will test kids' powers of logic, and patience! "The logic, reasoning, and calculating required by the problems...will delight and torment puzzle fans."--Booklist. "Ninety-one how come' mysteries....We never get enough of these."--Games. - from Amzon