Bradley S. Witzel, PhD, is an award-winning teacher and professor who works as an associate professor and education program coordinator at Winthrop University, the flagship education college for the state of South Carolina. As a classroom teacher, and before that as a paraeducator, he worked in multiple settings teaching mainly math and science to high-achieving students with disabilities. Dr. Witzel has written five books, including the best-selling "Response to Intervention in Math "through Corwin, as well as several dozen book chapters, research and practitioner articles, and training manua...