Critical thinking is paramount to learning.  One thing I tell my students all the time is that your clients or patients aren't going to give you multiple-choice options to choose from.  They're going to tell you what's wrong, and you have to be able to think critically to create an effective and safe treatment plan.

Open questions are good because they make the student think about the topic and respond in their own words, which shows understanding and comprehension.

Classroom management is an important skill for an instructor to have.  Proper classroom management can have a direct impact on learning in the classroom.

It's important to come up with various ways to keep students motivated.  It's also important for an instructor to consider their own motivations.

Fear can really hold an instructor back and have a negative effect on the learning environment.  It's important for instructors to manage these fears and keep their classes student-focused.

Active learning is ideal for students who are learning new concepts because it encourages and stimulates critical thinking and problem-solving skills.

Stress can definitely impact an instructor, but it can also affect a student's ability to learn, focus, or complete tasks.

To-do lists can be very helpful time management tools.  

Acronyms and mnemonics can be very helpful for learning.  In addition to helping with memory and recall, it also helps make learning new material more fun.

Reviewing material is very important, but I think it's important for the instructor to avoid reviewing material directly from a test for quiz.  I've seen a lot of instructors use their test as the review material.  You want to make sure students are understanding the concepts and not just memorizing the questions for short-term regurgitation.