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Learners build particulate matter collectors--devices that collect samples of visible particulates present in polluted air.

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

In this activity, learners build a model of a self-sustaining habitat (growing grass and beans from seeds).

In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting.