## Ratings for Pachter, L

### Average Ratings

Based on 43 ratings for this instructor.

**Assignments**

**Exams**

**Helpfulness**

**Enthusiasm**

### Instructor Ratings

Assignments

**Comment:** His exams were really easy. The second midterm had a 87.7% average. Weekly quizzes were helpful too. But personally he's not responsive to emails. There was a huge grade calculation mess after finals. There were still errors, even after the grade of whole class was recalculated.

Submitted Dec. 16th, 2015

Assignments

**Comment:** Really awesome professor. He is really passionate with math and you can tell he is really smart. His tests were really easy as long as you study you will be fine. He is really helpful outside of class as well(what I heard, never actually went). He taught some useful things that you ca actually remember in real word. I really like him as a professor. Just one question is he did not really teach much since he was doing his research so he was not fully engaged in lectures.

Submitted June 25th, 2015

Assignments

**Comment:** I had him for Linear Algebra + Diff EQ.
His lectures were very disorganized in my opinion, and he went off topic often in lecture. Then, halfway through the semester, he realized he was behind, so he began to rush. We barely covered PDE and fourier series, and overall, I just didn't have a very good learning experience. At the end of the class, his grade distribution seemed completely random, as students with high test scores got poor grades while some students with lower test scores got better grades, and a lot of students complained. He was quite unresponsive, but in the end he realized he had made a mistake calculating grades and then fixed the mistake. I feel like he was not very responsible as a professor, and if I could go back, I would not have taken his class. The tests are ridiculously easy, almost like a joke, which can be good if you're careful (you'll get 90%+) but bad if you make one careless error as there are only 4 questions and it can completely destroy your grade. There was little curve in this class, so hopefully your raw score was high.

Submitted May 28th, 2015

Assignments

**Comment:** If you want to understand how to do any of the problems on the homework, midterms, or final, you will need to read the book, and I mean actually read all the assigned sections. I went to all of his lectures, but they were absolutely useless. He sometimes covers abstract applications that have no relevance to what he will test you on. He is one of those professors that is so wrapped up in his intelligence that he doesn't understand we are just starting to grasp the concepts. His big saving grace were the exams. There were very reasonable (read: easy). He wanted to make sure we understood the basics, so he wouldn't ask us the hardest possible problems from each concept (not even close to that). I am not one of those students who easily understands math. I lived in my GSI's office hours, and I did god knows how many practice problems. Therefore, believe me when I say his exams were very nice. In summary, you'll hate Pachter in lecture but love him during a test.

Submitted May 26th, 2015

Assignments

**Comment:** My all time favorite Math professor. The lectures gave a good background for the homework, although it didn't really teach you how to do the problems. The exams were very fair. He asked simple questions, that were not beyond the scope of our knowledge. Perfect professor. Very enthusiastic.

Submitted May 24th, 2015

Assignments

**Comment:** Lior is a good instructor. This semester, the class was on general principles for producing mathematical models applied to biology. We covered some linear algebra, phylogenetics, infectious disease models, and population models. The problem sets were well designed; however, the midterm was very easy, and grades seemed to be assigned a bit randomly. Disorganization is a problem in this class, and Lior stopped giving lectures after the midterm.

Submitted Jan. 5th, 2015

Assignments

**Comment:** Pachter was kind of disorganized. We were supposed to get homework every week but that didn't happen and his lectures were sometimes difficult to understand. I think having a good GSI really helped me for this class.

Submitted Sept. 1st, 2014

Assignments

**Comment:** NO. Don't do it. If you're coming in as MCB/pre-med like I did, JUST TAKE A DIFFERENT MATH WHILE YOU HAVE THE CHANCE. It's going to become an actual pre-req for MCB pretty soon. I would have definitely taken Math 1A if I had known what this course was like. I came in with an AP Stats and AP Calc background, but it wasn't enough. He'll literally teach 2 lectures of calc, then a lecture on stats, then a week of Taylor series and the week after, probability. If that's you're thing and you have a strong background in both, then by all means go for it because it is a VERY useful class for MCB/premed students. This class isn't meant for everyone (obviously me included) so take my advice however you'd like. There's no textbook for the class so it makes it hard to work on extra problems if you want to improve, since the problem sets really aren't enough to prepare you for the quizzes and midterm. Last piece of advice: Get a good GSI. Your GSI will make or break you because Prof. Pachter, though very knowledgeable and enthusiastic, is all over the place. Lovely man but I wish he would've taught the class differently so that it made sense.

Submitted April 24th, 2014

Assignments

**Comment:** I entered this class having taken Calc BC and AP Stats in high school so I had previous exposure to 60-70% of the material. In the end I managed to earn an A+ in the course. First off, the cons about this class:
1. We DID NOT get enough homework problems. 3-6 problems a week is definitely not enough practice, especially for those first-time calc/stats students. I did not take the adjunct but there were mixed responses from my classmates who took it ranging from very useful to useless.
2. We did not cover topics in detail. In fact, I felt that AP Calc covered certain concepts in more depth than this course did.
3. The structure of the class felt somewhat disorganized. For example, we covered Integrals before derivatives and then Taylor Series immediately afterwards in the third week.
Pros:
1. If you did well in AP Calc and Stats in high school, then this class won't be too difficult.
2. We got to learn some super cool concepts that typical freshmen have never seen (Poisson's distr, max likelihood, etc.). Even though we didn't cover many topics in depth, we did cover a multitude of concepts and learned some practical mathematical applications.
3. The lecture slides he posted online were extremely useful and made up for the lack of a textbook. Since we didn't have enough practice problems, I made sure to carefully read the lecture slides.
The two midterms were rather straightforward, which can be a bad thing since the class is curved. However, the final exam tested how much you understood the material and was very fair. The quizzes were of moderate difficulty and contained questions that were harder than some of the exam questions.

Submitted Jan. 11th, 2014

Assignments

**Comment:** The problem with this class is that it's sooooo unorganized. Originally, we were supposed to have problem sets due every Monday and Friday, but then for some reason, mid-semester, there was no longer any hw assigned for at least two weeks. Then, homework was assigned pretty much once a week, but sometimes not at all. It kind of made the course less legitimate than it already was. Anyways, Pachter definitely is not the best lecturer, but boy did he improve over the semester. I remember in the beginning of the semester I slept through pretty much all his lectures, but as the semester went on, I became a lot more invested in the class as he became more of an interesting lecturer. The midterms and final for this class were VERY decent as well. I had the most horrible GSI, which made going to discussion a waste of time, but I still managed to pull off a very good grade. If you have little background in calculus however, I would recommend taking the SLC's adjunct course.

Submitted Dec. 29th, 2013