Presents a look at the geography, wildlife, history, government, economy, people, culture, and everyday life of the South American country.

Describes the various parts of the nervous system and explains how sensory messages are sent back and forth through nerves between the brain and the body.

Discusses the meaning and purpose of a constitution; recounts reasons why people thought the United States needed one in the 1780s and the events of the Constitutional Convention; and describes the Constitution's main points and how it has changed.

Briefly describes some of the foods that were important to various North American Indian cultures and their rituals surrounding the harvesting, hunting, food preparation, and meals.

Describes the physical characteristics and behavior of cicadas.

Describes the physical characteristics and habits of these nocturnal mammals, the largest number of which is found in the prairies of western United States and Canada.

Explains how the Dewey decimal system of classification for libraries was invented and how it works.

A brief history of the Cheyenne Indians, who call themselves "The People."

Discusses the Aztec Indians, their history, religion, language, customs, and final days.