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Knows that the rotation of the Earth on its axis every 24 hours produces the night and day cycle.

The Cause of the Earth's Seasons

After an instructor-led discussion, students use a globe and a lamp to determine the cause of the Earth's seasons. This lesson attempts to correct the common misconception that the Earth is closer to the Sun during the summer in the Northern Hemisphere. Sometimes, in order to correct science misconceptions, it is necessary to confront them head on. This lesson encourages students to voice this misconception at the beginning of the lesson and then attempts to correct it first, by exploring the reason for it, and then by presenting an alternate explanation.

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Modeling the Motions of the Earth, Moon and Sun

The purpose of this lesson is for students to learn the relative motions of the Earth, Sun and Moon. Awareness of these different motions is needed to develop an understanding
of the causes of the day/night cycle, the seasons and the cycle of lunar phases.

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