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In this activity, learners build a hot air balloon using just a few sheets of tissue paper and a hair dryer.

How does a green roof, or roof covered by plants, affect the temperature of the inside and outside of a building? Learners design and build houses to find out the answer.

In this activity, learners make a miniature greenhouse or "terrarium" to explore the greenhouse effect.

In this activity, learners discover how solar energy can be used to heat water.

In this activity, learners explore the devices used over time to measure changes in temperature.

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

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

Learners apply their knowledge of heat transfer to design two cans - one that will retain heat and one that will cool down quickly.

In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.