Theresa Wills, PhD, is the author of Teaching Math from a Distance, K-12: A Practical Guide to Rich Remote Instruction.  She is an assistant professor of mathematics education in the School of Education at George Mason University, where she works with inservice mathematics specialists and preservice elementary and secondary teachers.  Theresa has taught synchronous online classes and webinars since 2010 and researchers teaching practices that are adaptable to the online environment.  She is a former classroom teacher and math coach who still volunteers regularly in K-12 classrooms.