Hello, World! board books introduce first nonfiction concepts to babies and toddlers. Told in clear and easy words with simple facts ("This red tractor is used for plowing, planting, and harvesting crops") and featuring bright, cheerful illustrations, Hello, World! makes learning fun for young children. It's a perfect way to bring science and nature into the busy world of a toddler, where learning never stops.

• By Jill McDonald