Discover Series Books for Babies & Toddlers Doughnuts make the world go 'round. No? So, a doughnut may not be a life essential but a maple bar sure makes for a delicious Saturday morning treat. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new images, words and ideas 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.