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An introduction to sedimentary rocks, explaining what they are, how they form, different types, how they are used and other related topics, with instructions for an activity.

Examines such physical features, movements, and phenomena of the earth as rocks, minerals, volcanoes, earthquakes, landscape changes, the seasons, gravity, and the atmosphere.

Examines the different ways we can heat materials and how heat can change materials.

Presents a children's book for early readers that describes big machines and what they do including the biggest dump truck in the world, crane, airplane, helicopter, space shuttle, and more.

This book presents over 100 questions and answers to facts about men and women who have received recognition for their achievements.

Discusses the increasing need for energy in modern society, examines the problems caused by the use of fossil fuels, and looks at alternative energy sources.

An exploration of solids that describes states of matter, how materials conduct electricity and heat, chemical changes, separating mixtures, and solutions, and more.

This book explains that cotton is a natural material and that cotton is used for fabrics and furnishings.

This book explains that glass is a manufactured material and that glass is used for containers, lenses, and mirrors.

This book explains that plastic is a manufactured material and that it is used for containers, buildings, packaging, plastic parts, and materials called composites.

Describes new technologies that are helping make fossil fuels, biofuels, water, wind and solar energy more efficient.

Presents an introduction to wool, looking at what it is, where it comes from, how it is processed, and how it is used; and includes photographs, a glossary, and a list of books for additional information.

An introduction to police cars featuring close-up color photos. Describes the parts of police cars as well as different types such as police vans and helicopters.