Discussion About the Moon

fall_2009-day_5_discussion_about_the_moon.jpgOver the weekend, the moon had been half lit. One of the instructors asked the students if anyone had seen it. A few of them had. The instructor also asked them if they estimated the angle between the sun and the moon when the moon was half lit. No one had written down an exact estimate, but the students knew it had been less than their previous observations of about 110 degrees. The instructor led the conversations that took place. She probed them for more discussion about what they already knew by asking “How is the angle changing as the size changes?”. After talking about their previous observations from the moon observation chart (left), the students came to the conclusion that as the moon has been getting smaller, so has the angle between the sun and the moon.

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