Click on your appropriate course to gain access to its links on the Navigation bar to the left.
To find the work you have missed find them on the Power Point and/or Worksheet page. There is a calender of upcoming test dates and assignment due dates for your class. It is updated periodically. Mark updates for each respective class is accessible by following the links (on left-side toolbar), but you must know your personal code (given in class) and the period in which you have your class.