He is an internationally recognized writer, speaker, and workshop facilitator in teaching and learning issues, with special emphases in flipped learning, alternative grading practices, and teaching with technology. He has delivered addresses and led workshops at colleges and universities in the United States, Canada, the United Kingdom, France, and Jamaica. He has authored or co-authored several research articles on teaching and learning, and he writes on issues involving teaching, learning, mathematics, technology, and higher education at his blog Casting Out Nines. His first book, Flipped Learning in the University: A Users’ Guide will be published by Stylus Publishing in 2017