They present information with moments of dead silence while you're tapping the pen on your desk or doodling on the notebook. Anything to keep your attention-span alive. Some of the best professors have flowing lectures, tell stories, are easy going, take the time to learn your name, humor the class without trying to and maybe even give you candy. This is the combination of professors many students have this semester. After a week, you probably will know which classes may be fun, which classes will last an eternity and which classes you don't expect to attend until the week before finals.
Professors are a significant factor for students in determining how happy they are in the classroom.
Therefore, it's important for professors to make good, lasting first impressions on students. A good first impression is as simple as delivering a genuine smile. In the season of internship searches, it wouldn't hurt students to do this more often during interviews. However, the people who most likely receive smiles are friends. Although making a good impression on them isn't as vital as it is in a job interview, how you present yourself to your fellow students says much about who you are and how you feel.