Bringing the Moon Into the Classroom

Abstract

Understanding the phases of the Moon is a perennial stumbling block in introductory astronomy classes. In the film, A Private Universe, for instance, both Harvard graduates and gifted high-school students display serious misconceptions about the Moon\u27s phases, believing, among other things, that the Earth\u27s shadow on the Moon is the cause of it all. Part of the problem may stem from textbook illustrations that show a view of the Moon in orbit around the Earth with the Sun of to one side. Students have trouble converting mentally from this God\u27s eye perspective into the geocentric perspective we experience as observers on the Earth looking at the Moon. As an aid in developing this skill of visualizing the same phenomenon from different frames of reference, I have lately taken to employing video techniques in the classroom. [excerpt