Todd's research interests include the use of technology in the teaching and learning of school mathematics. He is particularly interested in the use of technology to foster greater collaboration between university faculty, preservice teachers, inservice teachers and their students. With Steve Phelps, Todd co-directs the GeoGebra Institute of Ohio and co-organizes the annual GeoGebra Midwest Conference at Miami University each June. Todd currently is the co-editor of the Ohio Mathematics Journal.