Todd Keene Timberlake is a Professor of Physics & Astronomy at Berry College in Mount Berry, GA. He received his Ph.D. in Physics from the University of Texas at Austin in 2001. He has published several articles on using computers to teach physics and astronomy in the American Journal of Physics and The Physics Teacher.
J. Wilson Mixon is Dana Professor of Economics Emeritus at Berry college. Over 70 of his articles have appeared in refereed economics journals. They continue to be downloaded in significant numbers. He maintains a web site that contains a large amount ofExcel-based analysis of economic principles. In the past three years, over 27,000 have visited the site.