game called My Dear Aunt Sally. It was programmed by 3G Studios. The game is intended for Grades 2-8 and teaches operations involving whole numbers, integers, fractions, decimals, and rational numbers. Research During his first few years as an assistant professor at Penn State Erie, Larson continued to do research in the area of his dissertation. His research resulted in the publication of several articles, mostly dealing with the lattice of topologies. By the mid-1970s, however, he switched his writing efforts to textbooks. Larson, R. E., R. P. Hostetler and B. A. Edwards (June 1994, July 1994). "CD-ROM Textbook and Calculus". FOCUS: Mathematics Association of America. Continued involvement with education Larson is an active member of the three American mathematics teaching organizations: the National Council of Teachers of Mathematics, the American Mathematical Association of Two-Year Colleges, and the Mathematical Association of America. He is a frequent speaker at each of these organizations' state and national conferences. Ron and Deanna Larson have been active in philanthropy at Penn State University. They are members of the Mount Nittany Society, which recognizes individuals who have given over $250,000 to the university. Until 2008, all of Larson's textbooks were published by D. C. Heath, McGraw Hill, Houghton Mifflin, Prentice Hall, and McDougal Littell. In 2008, Larson was unable to find a publisher for a new series for middle school to follow the 2006 "Focal Point" recommendations of the National Council of Teachers of Mathematics. He then started a new company to publish the books, Big Ideas Learning, LLC. According to his acceptance speech for the Distinguished Alumnus Award in 1998, Ron's interest in writing mathematics textbooks started the summer after his sophomore year in college. "In my sophomore year I decided to switch to math. I wasn't prepared for it. I had forgotten my high school algebra and trig, and I had to spend my sophomore year taking those courses over again. After I was accepted to Lewis & Clark, I made an appointment to talk with the math department chair, Elvy Fredrickson. That was in June 1964. I asked Elvy if she would let me squeeze four years of math into my junior and senior years at Lewis & Clark. To imagine her thoughts, you have to remember that I had not even taken a course in freshman calculus. I didn't then know what Elvy was thinking. I only knew what she said