Maple is available for most platforms (Windows, Macintosh, Unix, etc.); student version of Maple can be purchased from Waterloo Maple for $120. You can also use the campus modem pool to dial-in to the mathlab computers, or access them via the internet.
Working together on the projects is encouraged, although each student will be responsible for turning in a write-up of the problem and solution. This should contain a detailed description of the problem or topic, what means were used in solve it, and the solution. These write-ups should be produced by each student individually, and should be detailed enough so that someone who has not taken the class can read and understand them, and will believe the solution is correct. These write-ups are often acceptable for the mathematics writing requirement.