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Cool off in the heat with this project! Learners use simple materials to build a fan that runs on a motor.

In this activity, learners explore liquid crystals, light and temperature. Using a postcard made of temperature-sensitive liquid crystal material, learners monitor temperature changes.

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.