6 copies of Earth in Space. Earth moves in two main ways. It rotates on an imaginary line called an axis, resulting in day and night. It also revolves around the sun.
6 copies of Earth, Sun, Moon. Discover the mysteries of Stonehenge. Explore the motion of Earth and the moon in relation to the sun. Trek back to ancient times for a look at the technology of early sky-watchers.
6 copies of Ocean Exploration. The ocean covers most of Earth's surface and is home to many things.
6 copies of The Oceans Around Us. Follow a sea turtle's adventures and learn about the features of the oceans and the ocean floor. Meet human divers and deep-sea creatures along the way.
6 copies of Explore the Northeast. The Northeast is shaped by it's geography, history, economy, and people.
6 copies of The Northeast. Take a guided tour with Becky through the Northeast: Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, Connecticut, New York, Pennsylvania, New Jersey, Delaware, Maryland, and the District of Columbia.
6 copies of Explore the Southwest. The Southwest is shaped by it's geography, history, economy, and people.
6 copies of The Southwest. Travel with Luis and visit some of the most beautiful lands in the United States. Visit New Mexico, Arizona, Oklahoma, and Texas.
6 copies of Explore the West. Discover how the West was shaped by its geography, history, economy, and people.
6 copies of The West. Go west with Alex and tour the states of Alaska, Hawaii, Washington, Montana, Oregon, Idaho, Wyoming, California, Nevada, Utah, and Colorado.
6 copies of Explore the Midwest. The Midwest is shaped by it's geography, history, economy, and people.
6 copies of The Midwest. Follow your guide, Will, through the midwestern states of Ohio, Michigan, Wisconsin, Minnesota, Iowa, Indiana, Illinois, Missouri, Kansas, Nebraska, South Dakota, and North Dakota.
6 copies of Exploring Ecosystems. An ecosystem consists of all living things and nonliving things within an area. An ecosystem is always experiencing changes. Many factors can affect the stability of an ecosystem.
6 copies of Ecosystems. Explore the prairie ecosystem, its populations, habitats, food chains, and food webs. Learn the relationships between the living and the nonliving parts of an ecosystem and how ecosystems stay in balance.
6 copies of What Is Matter? The world is made of matter.
6 copies of Matter, Matter Everywhere. Learn about states of matter, how matter is measured, and how atoms are arranged. See how changes in matter have helped us create everything from artificial hearts to bulletproof vests.