Elementary Geometry for College Students 7th Edition

Daniel C. Alexander is professor emeritus of mathematics at Parkland College in Champaign, Illinois. Before retiring, Professor Alexander taught mathematics at the secondary and college levels for over 40 years. He was a member and officer of IMACC, a member of AMATYC, and remains a member of ICTM. In addition to presenting and participating in panel discussions at these conferences, Professor Alexander has published numerous articles in the ICTM, NCTM and AMATYC mathematics journals. Professor Alexander holds undergraduate and graduate degrees from Southern Illinois University, and completed considerable post-graduate course work as well.

Before her retirement, Geralyn M. Koeberlein taught mathematics at Mahomet-Seymour High School in Mahomet, Illinois, for 34 years. She taught several levels of math, from Algebra I to AB Calculus, and spent the last few years of her career as chair of the Math and Science Department. After receiving her Master’s Degree from the University of Illinois early in her teaching years, Geralyn continued her education by receiving over 90 hours of post-graduate credit. She is a former member of the ICTM and the NCTM.