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Discusses the environmental conditions of rain forests, the plants and animals that live in these forests, and the dangers of deforestation.

Describes the many ways in which American counties, cities, towns, boroughs, villages, school districts, and special districts may be organized and governed.

Describes the geography, history, resources, cities, parklands, economic development, and people of the eight Rocky Mountain states.

Discusses the beginnings of the ancient American civilization, its people and their way of life, and the coming of the Spanish conquistadores.

Spotlights the important events and people of World War II.

Examines the life, political career, and achievements of the third president of the United States, including a discussion of his beliefs and their influence on the Declaration of Independence.

Discusses the workings of the body's immune defense system; what happens when this system functions perfectly, too vigorously, or not at all; and current research in immunology.

Discusses the origins, history, and way of life of the Indians of the northeastern United States before and after the arrival of the white man.

Discusses the development of sign language and describes how it is used in conjunction with finger spelling, speechreading, and other forms of communication to help individuals with impaired hearing.

Describes major events of the war, including events leading up to the war, parts played by significant leaders, and the war's outcome.

Descriptions and experiments introduce and explain electric cells, batteries, and other simple electric devices.

Step-by-step instructions for writing a report, including choosing and understanding the subject, building a bibliography, taking notes, outlining, and writing the final draft.

Provides instructions for science experiments and projects in botany, physics, energy, and nature, using such everyday objects as kitchen utensils, sink, and bathtub.

Discusses the achievements of the ancient Egyptians in science, mathematics, astronomy, medicine, agriculture, and technology.

Discusses the theories of ancient Greek philosophers-scientists such as Ptolemy, Pythagoras, Hippocrates, and Aristotle, and describes some of the scientific discoveries attributed to the Greeks and their impact on modern science.