The hot-selling nonfiction board book series is now available in a four-book boxed set--perfect for holiday gifts, birthdays, and baby showers.Here's the first step to your baby's understanding of science and nature: the four most popular board books in the hit Hello, World! series--Solar System, Dinosaurs, Backyard Birds, and Bugs.Hello, World! is a series designed to introduce first nonfiction concepts to babies and toddlers. Told in clear and easy words and featuring bright, cheerful illustrations, Hello, World! makes learning fun for young children. And each sturdy page offers helpful prompts for engaging with your child. It's a perfect way to bring science and nature into the busy world of a toddler, where learning never stops.