If your degree is within the Faculty of Science, most courses already have lecture notes on UNSW's WebCT (This is your main server where you can access your course's lecture notes, announcements, discussions etc), then you just print your lecture notes and bring em to the lecture.
If you unlucky enough to do courses that are run through the BEES department i.e. genetics, 9 out of 10 times you'll need to bring in loose paper to write notes on.
No real need for laptops.