Use the course schedule, your familiarity with the material, the relative weight of the assignments and exams (that is, what percentage of the total grade are the assignments and exams worth), and information from the professor to help prioritize your tasks and manage your time effectively.
Start with a term calendar that shows you the entire term at a glance. Write exam dates and assignment/lab due dates on this calendar, along with other events that will affect your schedule (here is an example month from a term schedule). You may want to use a paper calendar you post on the wall in a spot that catches your attention on a regular basis. Or, you could use the day timer provided to you by the USSU (University of Saskatchewan Students' Union), or an online calendar such as a Google calendar, Outlook or your PAWS calendar.