Discover Series Books for Babies & Toddlers Is the most exciting time at your house when a fire truck rolls by? Firefighter brings 25 full-color photos to your fingertips. Each photo has a title beneath it so you'll never be stumped when your child points to a fire truck and asks for a detailed description. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce new words, images 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.