Super easy class. Negrini is so so nice and accommodating. She is awesome and easy to talk to outside of class especially if you need a letter of rec. Her exams and HW are fair and she uses slides in class so it's okay if you miss one since you can catch up easily. Recommend for both 151A and 151B.

Amazing teacher!!!!
If you have to take a two quarter sequence I would 100% recommend doing 151a and b with her. She is very available to help outside of class in office hours, and super good at explaining topics or clearing up homework questions. Her lectures are extremely good, they are straightforward and shockingly clear considering the content can get pretty complicated. The exams are also written super reasonably, they test exactly what she teaches and if you understand the basics of everything that is covered you will do very well.
All around loved this class because of her, it was definitely my least stressful of my math upper divs because of the clarity, and still learned a ton.