Try meeting people in lecture and recitation to do problem sets together. This gives you a whole new set of people to meet every semester, for every different c

Try meeting people in lecture and recitation to do problem sets together. This gives you a whole new set of people to meet every semester, for every different class that you take. Doing problem sets together is a really good excuse to introduce yourself to someone. Join a fraternity or sorority and go to fraternity parties. It's really easy to meet people that way. Frats are by definition social groups, so they'll introduce you to a lot of people on campus. This is kind of weird, but go to office hours for the classes you really like. It's usually the same few people going to office hours and they really care about the topic, so if you do too, you could become good friends. Join a lab to do research. You'll meet a lot of the older professors and graduate students that way. It's a different set of people than your classmates.