Discover Series Books for Babies & Toddlers Let's journey into the past and explore dinosaurs and more through fossils! From dinosaurs to mammoth tusks, kids can discover the treasures of our prehistoric past through colorful images and simple titles. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new ideas, words and concepts to kids. Use this photo dictionary as a learning tool. Each photo has a clear title beneath it for identification. Language learners, children, and people looking to build their vocabulary can use this simple book to learn new words.