Richard D Nation Richard Nation received a B.A. in mathematics from Morningside College and a M.S. degree in mathematics from the University of South Dakota. Mr. Nation also attended a National Science Foundation academic year institute in mathematics at San Diego Stte University. Mr. Nation taught math at Palomar College in California, where he was on the faculty for 20 years. He has over 38 years' experience teaching mathematics at the high school and college levels. He is the co-author of several Aufmann titles. Today, Mr. Nation's professional interests include the impact of technology on curriculum development and on the teaching of mathematics at the precalculus level. Read More Read Less