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In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

In this activity related to indoor air pollution, learners build take-home dust catchers with wax paper and petroleum jelly.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.

This lesson challenges groups of learners to design and construct a wind generator with the most electrical output.

In this activity, learners explore how parachutes are used to slow down moving objects. Learners work in teams of "engineers" to design and build their own parachutes out of everyday items.