Text and illustrations introduce different kinds of rocks and fossils, including how they are formed and where they can be found. Includes activities.

Describes the properties of different types of natural and manufactured matter, including elastic, marble, wood, silk, and gold. Materials answer fundamental questions about the matter and materials that make up the physical world around us. What are rocks made of? Where do plastics come from, and what are they used for? Why can I see through glass? Readers are introduced to the most common natural and manufactured materials-including metals, wood,...

Simple text and color photographs introduce the characteristics of light and sound.