Bradley S. Witzel, PhD, is an experienced and decorated teacher of students with disabilities and at-risk concerns. He has worked as a classroom teacher and before that as a paraeducator in multiple secondary settings. Dr. Witzel received his B.S. in psychology and special education from James Madison University and his M.Ed. and Ph.D. from the University of Florida. He currently serves as an associate professor at Winthrop University in Rock Hill, South Carolina. In higher education, Dr. Witzel has taught undergraduate and graduate courses in special and general education methods as well as a variety of other courses from transition to behavior support. He has written several research and practitioner articles, books and book chapters on mathematics education and interventions, served as a reviewer of the final report from the National Math Advisory Panel, and served as a panelist on the IES RtI Math Practice Guide.