Uses transparent overlays to present information about the habits and behavior of whales and to help identify different water mammals.

Follows a hen's egg from the moment it is laid to the time the chick hatches out. Also introduces various egg-laying animals, such as birds, snails, and snakes;on spiral bound transparent pages.

Follows a chestnut tree through the seasons as it sprouts from its seed, blossoms, grows, sheds leaves, and drops new chestnuts that will one day become trees too. Some of the illustrations are on clear overlay pages that can be turned to change the nature of the next double-page spread.

Meet every type of horse from the Asian wild horse to the tiny falabella.

Tells about the human body using color illustrations, cut-outs and overlapping transparencies.

Provides an introduction to turtles and snails, and includes painted transparent pages that allow young readers to make discoveries of their own.

Text, illustrations, and overlays show bears hibernating, caring for their young, hunting and gathering food, and playing.

Meet a variety of penguins and learn all about where they live, how they take care of their young, and what they do for fun! Overlay pages that can be turned to change the nature of the next double-page spread.