you can do whatever you like as long as it meets the requirement in the syllabus of double spacing, times new roman/arial 12 point font, etc.
some people staple. some bind into a hard cover book. some just put those plastic ring things down the side.
supposedly there are no marks for presentation... but the markers, being human (apparently?), are still not going to look favourably on a ripped, scrunched bundle of loose leaf pages.