Hans van der Mars, PhD, is a professor of physical education at Arizona State University. He also taught at the University of Maine and Oregon State University. He has published extensively on teaching and teacher education in physical education, coauthoring 100 research and professional papers, books, and book chapters. He also has made over 220 invited, keynote, research, and professional development presentations at international-, national-, regional-, and state-level conferences. Dr. van der Mars is a fellow of the National Academy of Kinesiology and a research fellow of SHAPE America.