
Earth Materials
Do you know there are three different kinds of rocks? Learn how rocks form, how they change over time, and how they look. See science at work in the real world when you trip and your carefully labeled rock collection goes flying. Use what you learn to decipher how to get all of the rocks back in their correct category. Includes a note to caregivers, a glossary, a discover activity, and career connections, as well as connections to science history.
