MATH 31A
Differential and Integral Calculus
Description: Lecture, three hours; discussion, one hour. Preparation: at least three and one half years of high school mathematics (including some coordinate geometry and trigonometry). Requisite: successful completion of Mathematics Diagnostic Test or course 1 with grade of C- or better. Differential calculus and applications; introduction to integration. P/NP or letter grading.
Units: 4.0
Units: 4.0
5 of 9
Most Helpful Review
Winter 2026 - This class meets three times a week with one discussion. The lectures and discussions are only 50 minutes. Every week you have to complete a good amount of practice problems, post class refelections, a worksheet, and there is a weekly quiz in the discussion. The workload was a lot, but it definitely helps you succeed in the exams. The professor is super helpful. He provides his students with practice midterms and review questions before the exam. He is also always open to meeting with his students during student hours or whenever you need his help. If you're taking this class, I definitely recommend taking it with Jukka!!!
Winter 2026 - This class meets three times a week with one discussion. The lectures and discussions are only 50 minutes. Every week you have to complete a good amount of practice problems, post class refelections, a worksheet, and there is a weekly quiz in the discussion. The workload was a lot, but it definitely helps you succeed in the exams. The professor is super helpful. He provides his students with practice midterms and review questions before the exam. He is also always open to meeting with his students during student hours or whenever you need his help. If you're taking this class, I definitely recommend taking it with Jukka!!!
Most Helpful Review
Summer 2021 - Harris is so nice. Always willing to help, emails back quickly, has plenty of time to meet, cares about his students. He is really good at breaking things down into simpler terms. He would often write out general steps for solving problems which I found really helpful. I did take calculus in high school, but I definitely think even if you had never seen calc before, you would be able to do well with Harris as your prof. I would 100% take a class with Harris again!!
Summer 2021 - Harris is so nice. Always willing to help, emails back quickly, has plenty of time to meet, cares about his students. He is really good at breaking things down into simpler terms. He would often write out general steps for solving problems which I found really helpful. I did take calculus in high school, but I definitely think even if you had never seen calc before, you would be able to do well with Harris as your prof. I would 100% take a class with Harris again!!
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Most Helpful Review
He's not as bad as people say he is. He's organized, concise, and the grading is fair. The final was a bit difficult, but everything is curved. I enjoyed his lectures and I'm taking 31B with him next quarter. It's not an easy A, but it's definitely not super hard either if you do your work!
He's not as bad as people say he is. He's organized, concise, and the grading is fair. The final was a bit difficult, but everything is curved. I enjoyed his lectures and I'm taking 31B with him next quarter. It's not an easy A, but it's definitely not super hard either if you do your work!
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Most Helpful Review
Fall 2021 - This class was incredibly difficult. If you have no prior knowledge to calculus or you aren't well versed in the topics, do not take this class. I worked so hard to understand the material but it was no use. I attended all of his lectures and most of his office hours, I watched YouTube tutorials, I used khan academy and it was still not enough. The class moves way too fast for someone who doesn't have any knowledge on calculus and its especially hard when the professors lectures aren't helpful in any way. The professor teaches and explains in a way that only suits those who already know calculus and have a strong foundation in it. He offers no explanation on what calculus is and what the terminology he uses means. I only ended up passing because he curved the grades up which turned my D into a C. I will give him that, he allows students extra credit opportunities so that was helpful in boosting up grades. If you're good at calculus this class will be easy for you. If you don't know calculus I recommend you find another professor or a realllyyyy good tutor.
Fall 2021 - This class was incredibly difficult. If you have no prior knowledge to calculus or you aren't well versed in the topics, do not take this class. I worked so hard to understand the material but it was no use. I attended all of his lectures and most of his office hours, I watched YouTube tutorials, I used khan academy and it was still not enough. The class moves way too fast for someone who doesn't have any knowledge on calculus and its especially hard when the professors lectures aren't helpful in any way. The professor teaches and explains in a way that only suits those who already know calculus and have a strong foundation in it. He offers no explanation on what calculus is and what the terminology he uses means. I only ended up passing because he curved the grades up which turned my D into a C. I will give him that, he allows students extra credit opportunities so that was helpful in boosting up grades. If you're good at calculus this class will be easy for you. If you don't know calculus I recommend you find another professor or a realllyyyy good tutor.
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