David Sokoloff is Professor of Physics at the University of Oregon. He earned his Ph.D. from the Massachusetts Institute of Technology in AMO Physics under Ali Javan. He has been at the University of Oregon since 1978. His physics curriculum development work and extensive dissemination efforts are nationally and internationally recognized. Since 1986, he has conducted research into students' understandings of physics, and used the results of this research to develop active learning approaches to enhance learning in introductory physics courses. These include the RealTime Physics and Tools for Scientific Thinking laboratory curricula and Interactive Lecture Demonstrations, all of which make heavy use of microcomputer-based laboratory (MBL) tools for collection and analysis of data. These curricula, developed with support from the National Science Foundation and the U.S. Department of Education, F.I.P.S.E., are used extensively at the university, college and high school levels. He has conducted numerous national and local institutes and workshops to disseminate these active learning strategies, and has recently concluded a F.I.P.S.E. Dissemination of Proven Reforms project. He was awarded the Distinguished Service Citation by the American Association of Physics Teachers in 1997.