Occasionally students find that unusual circumstances will require some action on their part. Perhaps there is a question as to how a particular question was graded on a test, or there was an addition mistake in determining a grade. In cases such as these, the student should seek out the TA or the instructor as soon as possible in order to resolve the problem. A student may miss an test or an assignment because of illness. The TA and instructor should be notified as soon as the student knows that he or she will miss the test or assignment. E-mail or telephone messages are an easy way to inform your instructor or TA about such things. The TA or instructor will let you know what sort of documentation will be necessary to excuse you from a missed test or assignment, and will set up a procedure for making up the work. Most such difficulties can be handled by speaking with your TA or your instructor. You may very rarely have problems which you feel you cannot resolve with the instructor or TA; should such an occasion arise, please contact the Director of Undergraduate Studies in Mathematics or the chairman in the Department of Mathematics. We will do everything possible to help you resolve any problems occurring in the course of your mathematics studies at Hopkins. We wish to emphasise that the important thing is to take action immediately when you need to resolve any kind of problem. It often happens that waiting to report a problem makes it much more difficult (or impossible) to resolve in a satisfactory way.