World of wonder. Watch them grow

Describes the physical characteristics, behavior, habitat, and life cycle of robins.

Simple text and photographs describe the life cycle of cows and their role in the world.

Photographs and text introduce young readers to butterflies, describing how an adult butterfly is born of an egg that becomes a caterpillar. Includes instructions for a related activity.

Describes the physical characteristics, behavior, habitat, and life cycle of robins.

Photographs and easy-to-follow text chronicle the life cycle of a chicken.

Photographs and text introduce young readers to trees, describing the parts of trees and how to determine how old a tree is, and explaining how trees grow from seeds to saplings.

Photographs and easy-to-follow text chronicle the life cycle of a frog.