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In this activity, learners explore liquid crystal thermometers to observe how heat flows by conduction, convection, radiation, and evaporation.

Conduct a simple experiment to explore how temperature changes can make things expand or contract.

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

In this activity, learners explore how engineers have met the challenge of keeping foods, liquids, and other items cool.