Speaking as a Yr 12 Student who got 9 in the GCSE, it was really hard to revise properly, because there were only a few sample papers. But what I would did was:
- Made a poster of key formulae hidden under post-it notes. Every morning/night I would test myself on all of them (or all the difficult ones anyway!) If you know the formulae, you can definitely figure out where to go.
- I made notes on the whole specification in the form of flashcards. For areas I wasn't so sure on, I made little example cards that I could refer to. It really helps if you explain things in your words - I even made up my own notation to remember things and rules. (On that note, MNEMONICS ARE LIFE)
- I printed off all the sample papers and some 'predicted' ones we had at the time. The trick is not to do them all so early. Focus on notes earlier in your revision, and papers later (at least that worked for me.) I even did a past paper on the morning of each exam, and it really really helped me get in the 'Maths mode' and also memorise some familiar questions.
For reference, I was predicted a 7 from my school and got a 7 in our January mocks. I really did not expect to do as well as I did haha.
Just remember to persevere, and try not to get too caught up on revision! I did, and it really ruined my summer holidays because I felt sort of weird and empty.
If you want to know anything else, don't hesitate to pop me a message! Best of luck