Professor Greenfeld is very kind and extremely helpful during her office hours, so definitely go to those to get help on homework problems. Her lecture is clear and generally not hard to follow. Many exam questions are based on (1) theorems and their proofs that are covered in lectures and (2) homework problems.

To describe Rachel's Calculus teaching ability would be like describing COVID-19, horrific. Rachel has no clue what she is talking about 100% of the time and copy/pastes Wikipedia word for word into her powerpoints and expects you to understand it without question.

Rachel stated that she moved here from Israel within the last year and her English shows. I understand it is not her first language, but if you are getting paid 6 figures to teach rudimentary calculus, please please please know what you're talking about and how to say it in English, not Hebrew.

I took Calculus in high school and received an A; however, I have never been more confused in my life in a math class. Rachel confuses herself and stops at the board for 5+ minutes to look at the work she has written down on her notes. When a student has a question, she goes back to the slide and rereads the slide, never answering anyone's question.

Her tests are damn near impossible for anyone. The averages were roughly 50 and 52% on both midterms. Most people in this class have also taken calculus before, which shows Rachel goes out of her way to confuse her students and make the tests unbearable.

For all things that are good in this world, DO NOT DO NOT DO NOT take class from her. Suffer through the 8am like I should have. Rachel, I hope you please read this and realize you need to stop teaching.

While Professor Greenfeld seems to care about her students in some ways and I am sure she is a nice person, I feel the general consensus of the students, and especially me, is confusion and frustration with the teacher. When we ask questions in class, she gets defensive about her teaching and ends up not explaining what was asked (I assume from not understanding our questions as her English is not great). She encourages us to do homework assignments, which are helpful and necessary, yet she tells us frequently that the exam questions will be exactly like those we do on homework. After taking two midterms and the final, I can assure you these homework questions are nowhere near the difficulty of exam questions. I feel that I am teaching myself the content (my TA helps so much as well), but I am using my notes from the calculus class I took last year. I have attended every lecture, every discussion section, and every TA office hours. I am learning primarily from my TA and myself. After most lectures, I am lost and frustrated. I can safely say that I have left only a few lectures with a somewhat clear idea of what we had just learned. In addition, the professor writes very small and often with poor handwriting on the board and I have been ignored numerous times when I have raised my hand to ask if she could write it larger. I am beyond surprised to have received a B- in this class after failing (yes, failing, as in 52% and 53%) one of the midterms and the final. The curve must have been immense to make up for the mass confusion of all of her students. I took calculus last year, and I struggled greatly with Greenfeld, so I would advise not taking this class unless you have a very firm grasp of calculus prior because you will likely be teaching yourself during this class.

Text me at ********** for the PDF version of the fourth edition Rogawski textbook. I am selling it for $20. The hard copy costs over $100.

Overall, I don't recommend taking Greenfeld for 131B for the sake of learning, but for the sake of passing, you'll get through her class fine. Firstly, I didn't find her lectures all that helpful. I found myself constantly lost in her lectures, as I think most other students did. For one, she speaks VERY softly. I sat at the front of the room, but I can't imagine how anyone further away understood a word of what she was saying. Another thing, she uses old notes and just reads them off, adding small comments here and there. I personally found it frustrating cuz it made the pace a little too quick. My main complaint though is that she makes a point of keeping averages a secret from the class. Since this class basically rides on the curve, it can be really debilitating not knowing how you're doing in the class all quarter. I honestly can't say how the grading scale works even at this point, but I project I ended somewhere in 55-65% as my final grade and landed a B-.

HORRIBLE HORRIBLE HORRIBLE. This has been the worst class of my entire life no exaggeration. This professor makes you wanna pull your hair out and she is not helpful WHATSOEVER. The tests are not at all like the material learned in class and are too long for the amount of time given. She is not able to answer questions in lectures and is not considered with how low the class averages for both midterms were. Just do yourself a favor and do not take her unless u wanna fail

Pretty unclear lecture that could hurt to watch but Greenfeld is consistent with the textbook. For the most part, her responses to questions were either vague or more confusing. Going to her OH can help because she is approachable and knowledgeable, but there are alternatives provided. The TA's were great and the Professor does provide past/practice exams. I did not look forward to lecture but it did reinforce my learning of calculus.

Trash. Dont enrol if she’s teaching the class you’ll be confused on everything and question your college life

selling textbook! basically new! **********)

I had professor Greenfeld in her first ever year of teaching, and it definitely showed. Professor Greenfeld, unfortunately has a very strong accent which makes her difficult to understand. This was my first class ever at UCLA, which truly made me disappointed and confused. If you could take another professor please do so.

I took AP Calculus AB and BC, earning 3's on both exams, respectively. Per UCLA's rule, a 3 is unsatisfactory and I was forced to retake this class. Despite of that, I earned a B- in this class, while I earned A's in high school. Greenfeld has a way of truly confusing her students beyond comparison. I would often leave her lectures extremely confused, despite having learned the material before. When people would ask her questions in class, she would dance around the question or even respond in a way that did not make much sense, possibly she misunderstood what we were saying.

The Homework for this exam is not too hard, but it is VERY time consuming. I believe the TA's would grade one or two problems from the entire set of 10-15 problems, so it was definitely hit or miss. On her exams, she offered 10 points extra credit for everyone. Even with that, the average scores for exams were abysmal, around 54% for midterm 1 and 62% for Midterm 2. This just goes to show how difficult students had it in understanding the material.

She had a review session for the midterm, which consisted of her going over one remann sum problem for one and a half hours, a total waste of time. To put the grades into perspective, I scored the following: 75% on Midterm 1, 42% on Midterm 2, and a WHOPPING 53% on the final. Despite of that, I earned a B- in the class. Idk if I should be complaining honestly, but dang the curve on that thing must have been huge.

All in all, in my short time (1 year) at UCLA, Professor Greenfeld has truly been the worst professor I have ever had, definitely a GPA killer. If you're pre-med please don't make the mistake I did by taking the Math 31 series.