ds(R) series contains 101 quick-fire puzzles to exercise young minds. From memory games and simple calculations to spot the differences and jigsaw challenges, it's packed with activities designed to test visual, memory, logic and reasoning skills in 5 minutes or less. Written by bestselling puzzle book author Gareth Moore, this book is guaranteed to keep children's brains busy and provide hours of fun as they try to beat the clock. Perfect for: - Fans of other titles in the Clever Kids series - Kids who like puzzles and games - Kids looking to challenge how quickly they can solve puzzles