Kids can learn while they have super-sleuthing fun reading the LeapFrog Tag Book I SPY Imagine That. LeapFrog Tag books create a uniquely-interactive reading experience and are designed for use with the LeapFrog Tag Reader. Touch the Tag Reader to any part of the book and the interaction begins. As part of the Read on Your Own series, this LeapFrog book features sentence structures and vocabulary at perfect age levels to stimulate young readers and build their reading confidence. Connect with the Tag Learn to Read online system where kids earn online rewards and parents access the LeapFrog Learning Path to see what kids are playing and learning. Curious kids and their parents will enjoy hours of engaging and interactive learning with LeapFrog books and games. LeapFrog device sold separately.