"I should let you know that I tried the very first section that you gave me (on unique and one-to-one) and it did indeed create a good discussion in class. So, after that, my class was on a good track and I kept the style. I think this was a very important influence. I am sticking to this style of keeping very much in touch with the class and this is good."
Dr. Anton Betten
Department of Mathematics,
Colorado State University

"I always looked forward to the challenges that show up in class and the crazy presentations of true/false questions . . . especially the part where I search for a 'white tiger!'"  Charles Nguyen

Click here to see a white tiger.