These are distractions and will prevent you from concentrating on the material you are studying. That may be true, but studies indicate that it takes students longer, and the results are worse, if there are distractions like music and television when they are working on their homework. Work with other students on homework . This is one of the best ways to learn the material. Don't work with others on problem sets .
Problem sets are to be done independently.
If I suspect cheating occured on a problem set, I do not hesitate to take the issue to the Dean. Please see the college statement on academic honesty for more information about what constitutes cheating and the process followed when it occurs. See also my statement on collaboration . Review your notes between classes . This is a critical part of the learning process, and should not be overlooked.