Assistant Professor of mathematics at University of Denver with a PhD from University of Vermont. I previously taught at two middle schools in France.

Calum was extremely patient and helpful while tutoring me in Calculus. Would not have been able to do so well without his help. 100% would recommend to anyone needing a math tutor!

Calum is such a great teacher, he's so kind and understanding. He makes sure to approach each concept from multiple directions to help you understand the concepts more deeply and help connect all the concepts together in a way that makes the math very enjoyable, and intuitive.

Calum was my math professor this year at the University of Denver for a math class about Voting and Counting (Combinatorics). He was consistently patient, available for office hours, and always answered all of my questions in class. He approached teaching with enthusiasm, a sense of humor, and understanding. I would definitely take a class with him again—I recommend him for sure.

Calum taught a course for non-math majors and was incredible! He was helpful and answered every question with patience and kindness. He was able to explain concepts in various ways for all types of learners to understand. He was very nice and friendly, and I would definitely recommend him to others!!

I took a course designed for non-math majors under Calum, and it was an extremely pleasant experience. Calum is very knowledgeable in his area but also a very personable and patient instructor. I consider myself a person with a strong math-phobia, but being a student in one of his classes was not at all stressful or high-pressure; in fact, I rather enjoyed his lectures. I would recommend this instructor for anyone who wishes to have an awesome time learning!