An introduction to various sources of energy, including wind, water, electricity, magnets, heat, and sunlight.

Describes how a river begins and grows and how it influences the land that it flows through. Also discusses the many ways people use rivers and the importance of keeping them clean and unpolluted.

A brief history of the Sioux, or Dakota, Indians of the Great Plains describing their tribal organization, customs, religion, and their encounter with the white settlers.

A discussion of the nature and properties of light, with experiments.

Presents experiments which demonstrate the properties of water.

Introduces temperate forests, discusses the threats to them, and describes how the animals that live there survive.

Explains what tropical rain forests are like, looks at the plants and animals that live in rain forests, and includes information on why tropical rain forests are important and what is being done to save them.