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Energy is an essential part of our daily lives, but the resources that power the Earth are being threatened. In this lesson, students learn about renewable and non-renewable resources, including those that need protection.

What do a bicycle and a car have in common? They both move using the simple machine wheel and axle. In this lesson, students learn about how this simple machine works, and will identify objects that use a wheel and axle.

In this lesson, your students will explore the properties of solids and learn to describe them in various ways.