6 copies of Volcanoes. Volcanoes change the Earth's surface.
6 copies of Volcanoes and Earthquakes. Learn what happens when the Earth rocks and rolls, the theory of plate tectonics, and how technology helps us predict and prepare for the future.
6 copies of Earth’s Changing Land. Weathering and erosion change the surface of the Earth.
6 copies of Uncovering Earth’s History. Follow the discovery of a perfectly preserved woolly mammoth, an Ice Age animal found by a family in Siberia. Learn how fossils tell us about climate, events, and life on Earth thousands of years ago.
6 copies of Columbus and the Americas. The voyages of Christopher Columbus changed the world.
6 copies of Expeditions in the Americas 1492-1700. Find out how the arrival of European explorers Christopher Columbus, Herman Cortes, and Robert de la Salle changed the Western Hemisphere and Europe forever.
6 copies of The Thirteen Colonies. People moved to the 13 colonies for different reasons.
6 copies of Jamestown and the Virginia Colony. This is the story of the English settlers who founded the first American colony that survived, the hardships they overcame, and the steps they took toward self government.
6 copies of Declaring Independence. The Declaration of Independence told England that Americans wanted to be free.
6 copies of The Declaration of Independence. Follow America's fight for freedom. Discover why Thomas Jefferson was asked to write the Declaration of Independence and what bold ideas about government and human rights he included in the document.
6 copies of Road to Revolution. New laws and taxes caused the American Revolution.
6 copies of Fight for Freedom. Meet the Founding Fathers and learn about the events, the debates, and the struggles of the colonists as they moved toward independence. Find out how George Washington and other leaders helped the Colonies unite and win their freedom.
6 copies of Animals and Their Adaptations. Adaptations are inherited traits that help an animal survive in its habitat. Animals may have structural or behavioral adaptations.
6 copies of Animal Adaptations. Looks at animal adaptations and how these changes to the way different species look and act help them to survive in their environments.
6 copies of Electricity. Electricity is produced when electrons move from one atom to another. In static electricity, electrons collect in one location and then suddenly move to another. In current electricity, a constant stream of electrons move from one atom to another through materials that conduct elec... more
6 copies of Introduction to Energy. Energy is involved in every move we make and every breath we take. What exactly is energy? Learn energy basics while exploring its different forms.