My family moved to Canada when I was two years old. I consider myself extemely fortunate to have met excellent teachers and wonderful students who have made my career as a teacher so positive. I believe that challenging concepts in mathematics can be explained in such a way that students can read and understand themselves. Of course, this must be combined with offering problems without the usual repetition. This style is reflected in our Calculus Textbook. I owe a great debt of gratitude to my co-author and mentor Roger Allen. He has influenced my teaching over the years through his outstanding skill in problem creation and never settling for less in creating materials for students.

Descartes Medal-University of Waterloo 2004

Trafford Publishing- Advanced Placement Calculus Textbook
Find a description of myself and Roger Allen, along with the Calculus textbook available for purchase.

Math Resources Website
Contains sample chapters from the Calculus text, an ability to download the text electronically and many other worksheets, chapters on other topics than Calculus for teachers and students.