Maybe TAs should be more prepared for office hours. Even in smaller classes the overall participation is poor. Seldom are there more than 2 or 3 problems solved. TIPS on the homework are helpful. It could help to review the concepts of the lecture and do problems based on the concepts.
Quizzes take up too much time.
I think that section should be used to go over topics in lecture. P112 Homework and Exams Homework problems can be made more challenging by taking a mix of easy, medium, and challenging problems, which test more than one concept in a topic. Also numerical answers to homework problems can help as a check. It makes a big difference to those taking two hard exams. Is it just me.