Dr. Derek holds a Bachelor's degree in math education, a Ph.D. in math from China, and a Ph.D. in applied math from Canada. He has more than twenty years of experience teaching and tutoring math at both high school and university levels. Dr. Derek's teaching and tutoring skills lead students to learn not only WHAT but more importantly WHY, and to change their learning styles from memorizing to understanding. As a result, learning math is no longer a burden, but a pleasure. Over the years, his excellence in math teaching and tutoring has been recognized by students and their parents.