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In this lesson that includes hands-on activities and demonstrations, learners discover that it is the tilt of the Earth's axis (not its proximity to the sun) that causes the seasons.

In this activity, learners discover that one way to cool an object in the presence of a heat source is to increase the distance from it or change the angle at which it is faced.

This activity helps learners understand how the angle of the Sun affects temperatures around the globe.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.