http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ 2020-01-26T01:20:16-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/ http://sites.science.oregonstate.edu/physics/coursewikis/ph111/lib/images/favicon.ico text/html 2012-04-05T12:25:34-08:00 http://sites.science.oregonstate.edu/physics/coursewikis/ph111/doku.php?id=days:fall2009daybyday:fall2009day5:discussionaboutthemoon:start&rev=1333653934 Over 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 kne…