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Seasons -- Study and teaching


National Geographic Education: The Reason for the Seasons

How does the sun determine the Earth's seasons? This is the question that the National Geographic Education site seeks to answer with a lively 35-minute activity designed for students between the ages of seven and eleven (second through fifth grade). In the activity, students use polystyrene foam balls and light bulbs to simulate the intensity of the sun's energy on the earth's surface. The site...