Her interests include geometry and algebra, the use of computers for mathematical visualization and communication, and math education. Addington is involved in enriching the mathematical education of elementary and middle school students, teachers, and parents through several projects, including The California Math Show, a traveling hands-on exhibit on the idea of symmetry. To reach her, phone (909) 880 5362, fax (909) 880-7119, email susan@math.csusb.edu, or check her World Wide Web home page http://www.math.csusb.edu/faculty/susan/home.html.