Raintree fusion

Incorporates primary source materials in a look at the internment of Japanese Americans in camps following the attack on Pearl Harbor, including discussion of what became of their homes, businesses, and belongings.

Discusses the people, stadium, and events of the ancient Greek Olympics.

Examines different landforms around the world, including mountains, deserts, bodies of water, waterfalls, canyons, islands, and volcanoes.

Looks at how people use energy, explains where the world's energy comes from, examines the difference between renewable and non-renewable energy, and describes alternative sources of energy.

Presents an illustrated history of the women who played crucial roles at home and overseas during WWII, including those in the Women's Army Corps "Rosie the Riveters, " nurses, and USO volunteers, with information about peoples' attitudes toward the new roles they played and a glossary.

Presents a short study of the importance of the sun, and describes how the sun affects the weather, the sun's role in food chains, and how photosynthesis works.

Presents a brief study of submarines, what they look like, what they do, and how they can submerge.

Examines the ways in which certain plants live and grow including the biggest flower in the world, squirting cucumbers, redwood trees, and more.

An introduction to the body's immune system and how it helps the body fight off infection.

Examines smallpox and how the vaccine came to be discovered.