This fun and interactive lesson will teach your students the scientific method to find out if something sinks or floats with a little help from Cookie Monster.

This hands-on lesson will get your students to investigate some mystery liquids, and they will have to use their observational skills to figure out what they are.

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

Use this lesson to show your students the different types of solids, liquids, and gases. Show them how a solid turns into a liquid and how a liquid turns into a gas by using real life examples.

Help your students' reasoning skills grow with this activity that has them make educated guesses on whether or not an item will be attracted to a magnet.

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.

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.