Ribet, K A on Ninja Courses

Average Ratings based on 32 ratings

Overall Assignments Exams Helpfulness Enthusiasm
88 73 74 83 90

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MATH 55 (Spring 2015)

Overall Assignments Exams Helpfulness Enthusiasm
100 93 95 100 95

MATH 55 (Spring 2015)

Overall Assignments Exams Helpfulness Enthusiasm
84 80 90 62 100

Comment: Professor Ribet is awesome and very approachable. His homework assignments are fair and the average response time to piazza was 33 minutes! His lectures are organized and the pace was fine. The only problem with 55 is that there are so many material in it that it is impossible to cover all of them and make every one of the 293 people class understand. That said, if you would like to discuss deeper questions such as the generating function theories and further applications, GSIs are a great resource. Professor Ribet also personalizes with students by organizing social events such as breakfasts and lunches.

MATH 55 (Spring 2015)

Overall Assignments Exams Helpfulness Enthusiasm
100 100 75 100 100

Comment: Very friendly professor! Encourages students to ask questions during lectures. Homework is alright, covers only the concepts he went over in lecture. He's helpful during office hours. Exams are not hard, but the grading is very harsh, so make sure to write down everything to get full credit.

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
100 81 100 100 100

Comment: I found the class quite intuitive and interesting, and exams easy if you paid attention during class and read the book. Professor Ribet is brilliant and an engaging lecturer, and is incredibly helpful during office hours. In addition, he is by far the friendliest professor I've had at Cal so far, and is constantly working to know his students as friends.

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
90 70 86 100 81

Comment: Let me start by saying Math 55 is an okay class. The class initially served as a class for Computer Science majors to learn all of the math necessary for programming. If you love Computer Science and Math, you'll love this class. My only gripe with the material is that it seemed all over the place. With Math classes like 53 and 54, the material continually built off itself in a very cohesive manner. In those classes, all of the topics merged together quite well. Not so much with Math 55. In 53 everything came together with Stokes' Theorem. In 54 everything came together with the Heat and Wave equations. These final topics meshed together all of the concepts of the course and showed how they were all connected. I never felt that there was a point where all of the material came together in Math 55. It was sort of a loosely connected set of Math concepts that introduced a great deal of what is to come with Upper Division material but never had a big picture. Professor Ribet however, was an awesome professor. In each class he showed a clear enthusiasm for the material and always paused to answer any questions or clear up any confusions. His assignments were sometimes monotonous, especially toward the beginning of the class and ranged from really easy to incredibly difficult. However they proved useful as he would draw questions from them to put onto midterms. His exams were tricky but fair, causing me to think on my toes constantly. He was helpful in the couple of OH sessions that I attended and I really appreciate the breakfast and lunch meetings he would throw in the faculty club. He was always communicating with the students and giving updates on the class. I also really liked that he personally introduced himself to students in the early weeks of class and made a conscious effort to learn everyone's name. I really hope I can take another one of his classes in the future, I really enjoyed having him as a professor.

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
92 68 94 100 100

Comment: Such an awesome guy!!!! The problem I had with the class material wise was that it was a bunch of really interesting topics we got to spend about a week or two on, so most of it really was just kinda like. Yeah. But it was really interesting, and he's a really enthusiastic guy who's tests were pretty straightforward. The book seriously SUCKS but overall I learned a lot of interesting math stuff!

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
99 77 70 73 99

Comment: He's one of the few Math professors in Berkeley who doesn't have accent!! He cares about student and holds a lot of breakfast/ lunch to talk to student. Exams are not hard but you need to put a lot of effort. Highly recommend.

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
100 100 100 95 100

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
100 88 100 100 100

Comment: Professor Ribet is so far my favorite professor at Cal (I'm an applied math major). He is very enthusiastic, holds breakfasts and lunches at the faculty club to meet/socialize with his students, makes an effort to meet as many students as he can, has fair exams and curves, is very personable and funny in lecture, stops after a major point in lecture basically to say that he's been talking a lot and wants to know what we have to say, answers questions in lecture very thoroughly, e-mails us pretty often to update and let us know about cool math stuff, is very available on Piazza, and is just overall an awesome professor. I would recommend him in a heartbeat. The only criticism I could possibly say would be that homework assignments were a little lengthy; however, math 55 covers a lot of diverse material, so in order to cover everything, we did kind of need to have many questions on our weekly homework assignments. But, if you understand the material, the homework is not terribly crazy and/or shocking. Overall, I am beyond excited to have him for other classes in the future!

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
96 63 70 69 89

Comment: Ribet was a really interesting guy, very friendly and approachable. Lectures, though not necessarily the most interesting, were injected with his sense of humor, which always made me look forward to them. He really works his hardest to ensure that the students understand the material, though sometimes his examples were not always the most clear. However, I 100% recommend taking a class with him!

MATH 55 (Spring 2013)

Overall Assignments Exams Helpfulness Enthusiasm
90 74 81 90 100

Comment: Ribet, by far, has been my favorite professor here at Cal. He's incredibly kind and it is very clear that he knows his stuff. Try and read the text ahead of time if you've got the chance, Ribet can really clear up any doubts you have with the material!

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
100 90 96 94 99

Comment: Ribet is probably the best math professor I've ever had. Not only he is a great lecturer and super knowledgable, he is also very down to earth. He consistently hosts lunches with students, and is willing to chat about just about anything!

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
70 70 36 70 70

Comment: Semi tough exams, funny guy. Will greet students when they come in late. A bit slow: we didn't get to cover the more interesting parts of linear algebra. Also likes to have a lot of lunches. Sometimes might be more enthusiastic about lunches than lectures.

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
76 58 50 91 96

Comment: Assignments: There are usually around 10 homework problems due each week. I found that I needed to spend at least 5 hours to do each homework. While the time I spent on homework was ridiculous, I feel it was kind of necessary in learning how to handle different types of proofs. Enthusiasm: Ribet will go out of his way to try to help you, if you seek the help. He is very active on Piazza (where I got many of my questions answered). He also has around 3 hours of office hours each week, where you can ask questions. As some other people mentioned, he also frequently hosts breakfasts and lunches where students can chat with him. I thought that was kind of cool. Helpfulness: Most of the material Ribet covered in lectures came directly out of Axler's book. Thus my primary source of consultation was the book. Ribet's posts on piazza were generally pretty useful. Exams: really difficult exams. The average for midterm 2 and the final were less than 50%. But the scores don't really matter, because grades are determined by your relative performance. Final note: try to have George Melvin as your GSI. He's awesome!

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
100 100 74 100 100

Comment: Ribet is the bomb. His lectures are crystal clear and fresh, and I actually looked forward to them because he was extremely animated and perceptive to his student's needs. Catch his Math 55 class in the spring if you can! It'll be great, guaranteed. :)

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
92 65 72 86 95

Comment: This was my first math upper div class at Berkeley. Homework was pretty fair, but you probably need to spend more than 5 hours each week. One thing that I did not like about the class was that there is no solution to the homework problems, so I always had to go to office hours for help. But this is understandable because you learn how to prove problems by trying hard and thinking about the problem for a long time. I also enjoyed Ribet's lecture style. If you pay attention to the lecture, the material he covers will be really clear. He also spends few minutes in the lecture to take students' questions in the middle of the lecture to clarify things. Whenever students ask questions on piazza, either professor or other students answered everything. Exam is fair if you do your homework correctly. Overall, the professor is very enthusiastic and helpful. Highly recommend this class!

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
100 34 50 50 99

Comment: Professor Ribet is undoubtedly one of the best instructors in the math department at Berkeley. However, I was not content with the way he handled some matters within this course. My biggest complaint is that he did not bother to distribute solutions for homework problems except for a few, based on his reasoning that online solutions would dilute the nature of problem solving for future students who will be taking this course. I totally understand where he is coming from but for students who never took an intensive proof-based course like this one-I feel like we could have benefited a lot by looking at the model solution. And there is always a way to watermark the solution to prevent students from leaking it online. Maybe, he might not have been aware of it since no one bothered to tell him about it. Nonetheless, I still got the impression that he did not really care for students who struggled with the course overall.

MATH 110 (Spring 2014)

Overall Assignments Exams Helpfulness Enthusiasm
48 62 0 80 78

Comment: This class had the potential to be great (and I was greatly looking forward to this class) but I had a rather poor experience. I definitely recommend avoiding GSI Arthur Tilley. There were many times in discussion when he had no answer to a student's question and instead he just let other students (sometimes incorrectly) answer the question; I felt like the discussion sections were a waste. It probably would have been better for a GSI who specializes in Algebra to lead the discussions. It seemed to me that Arthur did not enjoy being a GSI (or at least, teaching our section); I wish he would have been more enthusiastic and better prepared. Ribet is a world class and brilliant mathematician and a great professor (and I heard some of the other GSIs were great) but Arthur greatly disappointed me. Ribet posted often on piazza and was very responsive to questions (online and in class). Exam #1 was OK but Exam #2 and the final were ridiculous. Nearly no one got the last question on the 2nd midterm correct and the question was dropped. For the solutions to some of the true/false questions on the midterm, Ribet answered with, “This is blatently [sic] false” and “In fact, it's spectacularly false.” I wish he could be less of what my friend calls “a cheeky cunt”. Leading up to the final exam Ribet posted on piazza, "the GSIs and I seem to agree that the final is easy;" unfortunately his prediction was far from the truth as the final average was about 37%. After the final (and after uploading the final grades to bearfacts) Ribet posted on piazza, “there's one student in the class who received an F on bearfacts but whose actual grade was an A…the problem that we discovered seems to have been explained: one of the GSIs left out a few final exam scores when the scores were entered late on Wednesday night. When I computed the composite grades, everyone with no final exam score had the equivalent of a 0.” I find this completely unacceptable; I wish the GSI and professor could be on the same page and actually know what they’re doing. Although they did a tremendous job in grading the exams quickly, I am greatly disappointed in the mess they created.

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
83 80 76 80 75

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
87 77 77 77 74

Comment: Nice guy. Reasonable homeworks and exams. Everything is straight out of the book, so you can skip lecture without adverse consequence. Up until the last chapter, the course covers much of the same material as 54, but is entirely focused on proofs instead of tedious calculation, which can either be good or bad depending on your preferences

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
80 84 88 50 89

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
83 88 69 86 88

Comment: Really brilliant professor - you can tell that he understands the concept so deeply and beautifully as he lectures. However, I think the GSI's didn't explain their expectations well from the start and by the time I understood how high they were... my grade had already significantly suffered.

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
70 33 50 71 70

Comment: Good lecture style, but it's sometimes hard to figure out what to focus on for the course. Much more difficult than Math 54, and my GSI was awfully big-headed and unfortunately, impossible to appease on exams and homeworks, which cost me my grade in the course.

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
72 72 84 61 67

Comment: Ribet isn't always in tune with the students: he often doesn't know what the students are/not understanding and often fails to emphasize the significance of a particular concept. He has a pretty good lecture style, but he sometimes jumps around an idea, making it hard to get the "point."

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
80 67 70 75 74

MATH 110 (Spring 2010)

Overall Assignments Exams Helpfulness Enthusiasm
92 30 41 78 82

Comment: Instructor was very enthusiastic and knowledgeable, but the concept was hard, much harder than Math 54

MATH 110 (Fall 2008)

Overall Assignments Exams Helpfulness Enthusiasm
100 100 100 100 100

MATH 113 (Fall 2013)

Overall Assignments Exams Helpfulness Enthusiasm
100 90 86 100 100

Comment: Professor Ribet is the best! He is always really excited and interested in the material and also getting to know his students. His assignments can be lengthy, but overall he's a very effective professor. I recommend him!!

MATH 115 (Fall 2012)

Overall Assignments Exams Helpfulness Enthusiasm
93 69 81 95 89

Comment: Recommend highly. Never had a professor more accessible or helpful. I only wish I had taken 116 with him the semester afterward.

MATH 115 (Fall 2012)

Overall Assignments Exams Helpfulness Enthusiasm
100 70 100 100 100

Comment: one of my favorite classes so far. tricky but fair exams. super nice, caring, and helpful professor. very passionate with great sense of humor. assignments were often long and tedious (and difficult).

MATH 115 (Fall 2012)

Overall Assignments Exams Helpfulness Enthusiasm
72 65 79 100 100

Comment: Take my review for what it's worth. When he taught this course in Fall 2011, it was drastically different from Fall 2012. One thing I noticed was that he was more generous with given more A's in Fall 2012 than Fall 2011, according to his website. You can check his exam averages and std dev for his three exams when comparing 2011 and 2012. This might account for the large amount of A's he gave out. Not sure what this means. But apparently from what I hear from my peers and my experience in taking his three exams, I had to say that his second exam was more easier than the first. However, his final exam is much harder than the first two exams.I did not put much time in studying for the final exam, but I did get the grade I wanted. He tend to assign lots of homework or homework that takes a while to finish, from what I hear from people in his other courses. He is very willing to help students and have lunch with them. By far, he's the only math professor I have taken that will have lunch with his student. He is very helpful in office hours. For lecture, unless you have not read ahead, you may find that the material is somewhat dense. At the end of the semester, I find that I was having a hard time pinpointing what points he was trying to make. At least for this course, he did not have a semester schedule that lists what topics are going to be covered ahead of time, so we only knew what material he was going to cover the week before. Many people who have gone in to take this course without Abstract/Modern Algebra or are currently taking it will struggle in the first part of the course. In retrospect, this is in my opinion a moderately hard course, but others will find this course really difficult.

MATH 115 (Fall 2011)

Overall Assignments Exams Helpfulness Enthusiasm
77 50 50 50 100

Comment: Ribet is incredibly enthusiastic. You can tell he really enjoys doing what he does, and he knows what he's doing. Homework can be exhausting, and his office hours, while he makes himself available, can be really hit and miss for helpfulness. His exams are hard and his averages are low, so, don't feel too bad if you don't do terribly well, because chances are a lot of others didn't. He's definitely worth taking.