Hello, World! board books introduce first nonfiction concepts to babies and toddlers. Told in clear and easy terms with read-aloud sound words ("Plink! There are 88 keys on a piano, and they each make a different sound") and featuring bright, cheerful illustrations, Hello, World! makes learning fun for young children. And each page offers helpful prompts for engaging with your child. It's a perfect way to bring science and culture into the busy world of a toddler, where learning never stops.