The simple science of dirt

Contenido: What is dirt? -- Types of dirt -- Layers of dirt -- Who lives in dirt? -- What do we use dirt for? -- How can we take care of the dirt?

Dirt is all around us. It is found on every continent on Earth. But what is it made of? What is its purpose? Readers will learn the answers to these questions and more through easy-to-read text and vivid photographs. An experiment rounds out the book and provides a hands-on learning experience to encourage deeper understanding. Meets Next Generation Science Standards.