1. ARTICLE
Student misconceptions in understanding lunar phases are well documented Lightman and Sadler 1993;
Lindell 2001; Lindell and Olsen 2002; Lindell and Sommer 2004; Kavanagh, Agan, and Sneider 2005. The
topic is often one of discussion on the Astrolrner Yahoo! Groups discussions. A posted question asking if anyone
had developed a lunar phases “planisphere” encouraged me to resurrect the device I developed during the
early to late 1980s; this device and its use is the topic of this paper. It was at this time that I learned of a Lunar
Phase Wheel designed by Mary Urquhart Urquhart 2010.