there are some exams (if not most of them) in maths that asks you to reproduce a theorem youv'e proved in class. my question is: do you memorise the way of the proof, and try to write on paper by memory or you try to prove it again without looking at the notes ot textbook? (i mean when you are preparing for the exam). obviously some kind of memorisation should be used here, do you think it's possible to do this by your own? i don't think so, i think you need to memorise a lot of times the theorems (or everyday in the preparation time before the exam you should write the proof, i think this is the best way to remember a particualr theorem by heart). ofcourse it also helps to remember the rationale behind the proof.