This national best-selling and innovative series starts with the basic building blocks of all scientific inquiry-interesting questions, which are answered in an accessible, child-friendly style. The conversational format is perfect for engaging curious readers, and delivering solid information in a way that encourages imaginative discussions and a creative learning environment. Take a thrilling and interactive journey to find out why dinosaurs once ruled Earth. Filled with fantastic activities built around common questions young learners wonder about dinosaurs, over 40 stickers, and a "Choose Your Own Dinosaur Hunter Adventure Game" that spans the entire book-the I Wonder Why Dinosaurs Ruled Sticker Activity Book will entertain, inform, and delight children for hours.