BEST MATH PROFESSOR!! Super easy to understand, and the HW and tests are very straightforward. All of the TA'S and the professor were super helpful during review sessions. As someone who is not the best at math, I found Willis easy to understand and engaging.

He's a little boring

Professor Willis was an engaging professor. I thought he did an adequate job, teaching Math 31A. I would preface my review by saying that I took AP Calculus in my junior year of high school, got a 4, and didn't take a math course in my senior year. I definitely think I would've been more confused if I didn't take AP Calc/had some sort of calculus background, but the course was a good review. The professor was a little confusing at times during the lecture, but he would go back and try to clarify things better if you ask. I went to two of his office hours and he basically just went over any homework problems we were having difficulty with. I would recommend taking Math 31A with Professor Willis as he was a great professor to have during my first quarter!

Willis is God.
I dropped hs calculus but I kinda enjoyed his lectures.

Willis is a fantastic math teacher. This class is perfectly designed for an introductory math class. While I am a math major, I feel like this class would be manageable for people of any major. There are only two homework assignments each week, one of which should be an easy 100. Both Willis and the TAs are very good about answering questions about the lecture and the homework. The midterms and the finals are not a walk in the park, but they are not designed to trick students and are pretty fair overall. Sometimes Willis explains concepts in a long-winded manner, but he is always open to clarifying when students get confused.

If you need to take Math 31, Willis is the teacher you want to be taking it with.

Willis is an amazing professor. Weekly homework assignments are both written (Gradescope) and online (Sapling). They are graded, and as long as you do them you won't have any problems with this class. Midterms and final are 24h and open notes. Not that difficult, just make sure to be rigorous and clear when answering the questions - they care more about the approach than about the answer.

Willis is a great lecturer, super clear information. Not a bad class overall but you definitely have to do your work

Professor Willis was very accommodating and understanding. He actually listens to what the TAs have to say about the students and uses the feedback to adjust homework deadlines. He'd sneak in the occasional joke during lectures and did an excellent job breaking down the concepts. He emphasizes understanding why the calculus works rather than having you memorize formulas without a cause. His tests were fair but challenging, and we had 24 hours to complete them (2 midterms and the final were given). Overall, he's a great professor who cares about his class and his students, and the online format was flexible.

Dr. Willis is very adept at explaining concepts; information is presented in a very clear-cut fashion. As long as you attend lectures, take homework problems seriously, and spend time on the practice exams, you should be fine.

Professor Willis is basically that one cool professor you wish you had for every class. For any would-be students of his reading this in the future, this perspective is from a student who took his class online during the 2020 pandemic. He broke down the material from class very well. He essentially took a topic that many may find hard and made it easier to understand. His lectures were at a good pace and he always interacted with the chat. He gave basic examples for all of the content he lectured on. The discussion sessions and office hours were very helpful to me when I was stuck on a problem. I would definitely recommend going to his office hours when you are stuck on the material and want direction. As for assignments, he gave us written homework on GradeScope and online problems on Sapling. I did have to shell out a bit of money for Sapling, but the digital textbook was included with it. He normally gave us until Friday to do the assignments, but he did extend the deadline or omit one of the two types of homework on weeks where things were a bit messy. Such as during midterms. Basically, he understands that we're all humans here and gives us reprieve sometimes. He also assigned a reasonable amount of homework, in my opinion. The written homework was usually only 6 problems, but that wasn't always the case. The number of Sapling problems tended to fluctuate more. He gave us practice exams for the midterms and final. The actual exams were all open for a 24-hour window and were open-note, final included. And finally, if personality is important to you, you might end up loving this man. He often joked with chat and was genuinely helpful. He's also not the biggest fan of pizza. Take that as you will.