Didn't enjoy taking this class at all. Professor Johnson was unclear in her lectures (took bits and pieces from the textbook, didn't explain anything clearly) and her grading on the quizzes/ homework assignments was very harsh.

Sometimes the homework assignments took upwards of 10-15 hours to complete. I will say that she wasn't very good at teaching Math 42 because she had no idea what she was even teaching to begin with. Overall, I wouldn't recommend taking this class with Prof. Johnson. If you don't have a choice, I'd suggest learning everything from the textbook (showing up to lectures isn't worth it).

As a professor, she was pretty good. Even though she did not post a practice midterm or final, they were both pretty easy to do if you read through her notes. She was very open to helping during her office hours, but the homeworks were significantly harder than any material covered in lecture. I got a 90 on both the midterm and final and a 100 on the project but ended with an A- because the homeworks tanked my grade. The TA was not that helpful during discussion.

1. No practice exams, may easily bomb if you take it easy
2. Need careful review after class, as TAs do little help
3. Requires strong self-study ability to do well in the class (this class is not as easy as it supposed to be)

For Math 31B: I averaged ten points better than average on each midterm and final and ended with a B-. The averages for Midterm one was 72.6, Midterm two was a 58 and the final was a high 60. She did not curve any of these exams and the final grade was curved less than one percentage point. There are no extra credit opportunities. The other calc class had the same midterms and final but the average was much higher. But of course this was our fault and not the fault of the professor.

I’m sorry for whoever has to take this class. Pro tip, wear protection before you let this class fuck you up.

31B NOT Math 42 because whoever runs bruinwalk seems to have graduated long ago and no longer updates stuff.
Let me preface this by saying that pretty much everyone I spoke to hated this class.
That being said, I didn't hate it. I thought that the p sets were engaging and I actually enjoyed solving the problems (which was nice for a change). Lectures were interesting and substantive. The TAs were very helpful and it was very interactive. Unfortunately, most of the kids taking this class are bus econ or bio majors, and I can understand how it would be very hard for them. Also, maybe I feel more positive solely because I did well.

Unfortunately, Dr. Johnson has a bad case of a pretty nasally voice, which doesn't speak much about her character, but it did make it kind of hard to listen. She was also very blunt, which was off putting.
This was definitely a hard and unclear class, but interesting, so take it at your own discretion.