The arctic wind howls, but the two polar bear cubs are warm inside their den. They snuggle tight against their mother and drink her milk. Three months later, they tumble outside for their first walk in the snow. Bundle up and find out what happens in a polar bear's world.
Kindergarteners raise butterflies from egg to adult in this close-up look at the insect life cycle.
Follow a classroom of real kindergartners as they participate in a popular activity: raising butterflies. Astonishing photographs show the life cycle of the painted lady butterfly, from egg to caterpillar to chrysalis to adult. Engaging text captures the children's wonder and explains the science behind metamorphosis.
You haven't changed a bit! Living fossils, or modern-day animals that very closely resemble their ancient relatives. Meet the coelacanth, horseshoe crab, dragonfly, tuatara, nautilus, and Hula painted frog. All are living fossils. Why have they changed so little over time, while other animals evolved or went extinct? Using contrasting "then" and "now" illustrations, veteran nonfiction writer Caroline Arnold alternates between a prehistoric creature...