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In this activity, learners explore how ordinary marshmallows expand when heated in a microwave.

Learners set up three different bowls, each with a different mass of oatmeal. Learners monitor the temperature of the oatmeal and find that larger masses take longer to cool.

In this activity, learners investigate the effect of heat on a reaction.

Using two baby food jars, food coloring, and an index card, you'll 'marry' the jars to see how hot water and cold water mix.

In this activity, learners explore atoms as the smallest building blocks of matter. With adult help, learners start by dividing play dough in half, over and over again.

In this physical sciences activity, learners explore how passive solar design increases energy efficiency.

Learners assemble a hot-air balloon from tissue paper. The heated air (from a heat gun) inside the balloon is less dense than the surrounding air and causes the balloon to float.

In this activity, learners discover that our hands are not reliable thermometers.

In this activity on page 2 of the PDF, learners test different materials to find out which is the best insulator.