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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

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 build a hot air balloon using just a few sheets of tissue paper and a hair dryer.

In this activity, learners explore the properties of paper by constructing and modifying paper airplanes.