I discovered this article seeking contact information for Mr. Keegan. I wanted to let him know what a difference he had made in my mathematics education and my life. I was deeply saddened to learn of his passing, and to know I would never have a chance to tell him what an impact his effective, personalized instruction made on my life. As a struggling math student, he investigated my personal interests, and helped me to understand the math content in a way that was relevant and interesting to me. I hope this note can be shared with his family and the Clarkston Middle School community to let them know he is still loved and appreciated by so many former students.