National Geographic readers. Level 1

Collects facts about polar bears, describing their physical characteristics, behaviors, and habitat.

Gives kids an up-close look at exactly how a caterpillar becomes a butterfly, with bonus information including different types of butterflies and poisonous caterpillars.

Contains illustrations and information about the dinosaurs that once roamed the Earth.

Examines different kinds of trains, including old steam engines, high-speed trains in Japan, the world's longest freight train, and more.

An introduction to ponies that describes their physical characteristics, behavior, various breeds, care, and role in history.

A brief biography of Amelia Earhart, the female aviator who was the first woman to fly alone across the country.

Collects facts about polar bears, describing their physical characteristics, behaviors, and habitat.

Photographs and text introduce early readers to various types of trucks, and features a mining truck and others.

Explores different types of aircraft, from supersonic jets to helicopters, with photographs and facts about aviation.

Looks at meerkats. Includes word definitions and questions and answers.