Masters students publish article about geometry activity

Please check out Technology and the Teaching of Circles by Danielle Bartlett, Sameera Baig, Grace Jeong, and Alyssa Fanelli! Congratulations to all! In this article, the authors share their findings from a study in which they tested how a GeoGebra activity supported students’ learning about central angles, inscribed angles, and intercepted arcs in geometry.

Article Abstract

When learning about inscribed angles and their intercepted arcs, students commonly confuse the concept and are not given the opportunity to discover their relationships on their own. We created a GeoGebra book consisting of two applets that allowed for 32 tenth grade Geometry students to see how the inscribed angles and intercepted arc measures changed as they moved points on the circle. The most significant finding that we discovered was how GeoGebra can be used as a tool to identify and clear up misconceptions of the central angle, inscribed angle, and intercepted arc. This activity provided an opportunity to initiate a rich mathematical discussion around the notational and numerical differences between arcs and angles. These findings are useful for teachers to support their students’ understanding of the conceptual ideas of the inscribed angle theorem.