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Learners build devices from rubber bands to test for invisible air pollutants.

In this activity, learners simulate Otto von Guericke's famous Magdeburg Hemispheres experiment.

This three-part activity shows learners how to build three meteorology tools: a wind vane, a rain gauge, and a barometer.

This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.