Pebble plus. Science builders

An introduction to soil that defines what it is, describes its layers, and discusses what makes it healthy.

Simple text and full-color photographs provide a brief introduction to electricity.

Simple text and full-color photographs provide a brief introduction to magnetism.

Brief text and photographs present an introduction to rocks and how they form.

Text and photographs provide a brief introduction to matter and its properties.

Text and photographs provide a brief introduction to compost.

Text and photographs provide a brief introduction to soil.

Text and photographs provide a brief introduction to electricity.