Original post by JampoloWell the GCSEs i revised for were maths (past papers, its the only way tbh) physics, chemistry, biology (writing notes and then going them and the main concepts, this worked well as i got A*A*A in physics chemistry and biology respectively) business studies (we had a 300 page textbook to revise from, so i wrote down just definitions and very important concepts, didnt do any past papers except the ones in class, got an A for business) and that was about it. The other GCSEs i didnt see anyway of efficient revision (e.g. English) or i hated the subject (e.g. food tech ), i wouldnt recommend "not revising", its just that i was too busy revising for the subjcets i was going to do in college, and maybe university, therefore they took priority.
So my advise to you is to write short brief notes, going over the key concepts. Also i have post-it notes, with each one having a key definition, and you can stick them in places around your room and just leave them as they are, as i have, but this definately helps too.
For subjects such as maths or statistics, the only efficient way to revise is through past papers, as the questions follow a pattern, also the subject is about application of knowledge, and is not so theoretical at GCSE.
Good luck in your GCSEs, but just remember, they dont mean as much as you think (or as much as i used to think), once you go to college they're basically redundant, they're only important if your doing medicine or a VERY competitive university course. Otherwise, dont pressure yourself too much!