A retired computer professional to teach math, physics

After getting my PhD in Computer Science at the University of Toronto I spent 42 year in IBM research, with brief sabbaticals in Switzerland, China and Japan. I feel I can teach high school and college level math, high school physics, and general computer science. I do not have a teaching certificate; my teaching experience includes a course on computability at the University of Toronto as a graduate student, teaching a semester of computer science in Beijing, China, and mentoring a Columb... Read More >>