Building an Analog Clock with Complex Numbers

Main Article Content

David Glassmeyer
Binita Patel


In this article, we describe a lesson that enabled 10th and 11th grade students to create an analog clock using GeoGebra. This self-directed, exploratory lesson is built on students’ prior knowledge of complex numbers and vector transformation and relies on the technological features of GeoGebra.

Article Details

Author Biographies

David Glassmeyer, Kennesaw State University

David Glassmeyer,, is an associate professor of mathematics education at Kennesaw State University. As a mathematics education researcher, David focuses on examining and developing teachers’ STEM content knowledge at the middle and secondary levels, specifically on teachers’ reasoning of mathematics concepts, as well as best practices in online mathematics teacher education.

Binita Patel, Innovation Academy, Fulton County Schools

Binita Patel,, is a STEM Educator at Innovation Academy, Fulton County Schools, where she teaches mathematics and technology courses. Binita’s interests include using technology to enhance the teaching and learning of mathematics.