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Whether youre walking along a busy city street or enjoying the solitude of the wilderness, you are always surrounded by sound. Readers will learn how sound waves are formed and how they change as they

Join Maggie and Alex, two young relatives of an Iditarod musher, as they get an insider's view of the race.Each March, the world's top sled dog teams gather in Alaska for the sport's biggest event: the Iditarod Trail Sled Dog Race. In this incredible race, mushers race their dog teams across more than 900 miles (1,448 kilometers) of rough Alaskan terrain. Readers (Ages 7-9) will learn about the Iditarod's history, rules, strategies, and much more.

Find out how people travel to and from the space station, what life is like for astronauts in space, why space exploration is important, and much more.High above our planet in outer space, astronauts

Learn how paleontologists dig up fossils, what kinds of things fossils can teach us about the past, and much more.Millions of years ago, enormous animals called dinosaurs roamed Earth. Today, scientis

Uses a story about two friends, a servant and a page, to introduce what life was like in a medieval castle.

"This book details the life and habits of hummingbirds."--

"This book details the life and habits of hippopotamuses."--

"This book details the life and habits of rabbits."--

"This book details the life and habits of red pandas."--

"This book details the life and habits of lemurs."--

"This book details the life and habits of ants."--