Learn from home and explore the world with these fun and easy board books! Every young child loves to look up at the moon in the night sky. Here's a Hello, World! board book that can teach toddlers all about the sun, moon, stars, and planets--with colors, shapes, sizes, and super-simple facts. Hello, World! is a series designed to introduce first nonfiction concepts to babies and toddlers. Told in clear and easy terms and featuring bright, cheerful illustrations, Hello, World! makes learning fun ...