Think fast! Are you ready for a jam-packed book of super-smart puzzles? From classic riddles to visual logic puzzles and inventive matching games, this fast-paced, fun-packed activity book is guaranteed to provide hours of entertainment for children aged 7+. About the Series: The Kids' Book of ... series is an engaging educational series, full of mind-boggling puzzles and activities that have been specially designed to develop the math and logic skills of young readers in fun ways.