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In this activity, learners explore the relationship between cooling water vapor and condensation. Learners investigate condensation forming on the outside of a cold cup.

Learners observe and conduct experiments demonstrating the different properties of hot and cold materials.

In this activity, learners make their own "tornado" using two soda bottles and water.

In this activity on page 7 of the PDF (Plants—The Green Machines), learners examine the effects that light and air have on green plants.

In this simple activity, learners see the production of a gas, which visibly fills up a balloon placed over the neck of a bottle.

This lesson focuses on molecular motion in gases. Learners compare the mass of a basketball when it is deflated and after it has been inflated.