Naturvetenskap & teknik
Filter
What is a bird? And how is it different from a mammal or a reptile? Some birds are huge and some are tiny. Some birds are fantastically colorful and some are plain. But what do all …
A nonfiction favorite for more than twenty years, The Planets has been updated to include some of the latest discoveries in space exploration. From the burning surface of Venus to …
How long would it take to count to a billion without stopping? How many pizzas could a million dollars buy? Big numbers-- like millions, billions, and trillions-- are hard to …
How many simple machines do you use every day? Probably more than you realize Machines make work easier-- helping break things apart, lift heavy objects, and change the power …
Berries, apples, melons and grapes; oranges, grapefruits, bananas--yum This scrumptious picture book, a companion toThe Vegetables We Eat, offers youngsters an inviting, …
Get a bug's-eye-view on the life cycle of the praying mantis, in this hilarious, scientifically accurate Nature Diary following an insect through her whole summer. Finalist for …
Introduces the history, design, care, uses, and safety rules of the bicyle to young readers
Think metric A fun illustrated primer on the internationally recognized metric system for kids. Used in almost every country in the world, the metric system is an easy-to-use way …
After the sun sets, on clear nights points of light begin to appear in the sky. But when we look up at the night sky, what are we seeing? Basic facts about the stars, as well as …
Everything you ever wanted to know about ladybugs-- and why they're crucial to our environment. When you think of a ladybug, you might picture a little red beetle with seven black …