> Past papers under exam conditions are a good start, even if you know there are gaps in your knowledge it will show you more clearly where those gaps are. Then you can focus your revision more in addition to learning what is typically on papers.
> I find writing out Concentrated, Short and Useful notes to be good for retaining the information to write down but also a useful resource to glance at if you forget it again. Don't write down everything in the text book, just key stuff and things you don't know well.
>Don't just memorise the facts/formulae. Understand them so if (more likely, when) they put in an unusual question you can use your understanding to deal with it, rather than having no idea because you don't actually understand the subject, you have just memorised the facts.
>Realise that GCSE are not the only way people will assess you. A levels are typically a better measure of someones skills which is why they carry more weight. Not that GCSEs are not important,but a lot of people think if they mess them up it will be the end of their lives...
Ultimately, its good revision and commitment of time that gets the good grades. It will be worth it on results day. But remember, when you open your results don't be too hard on yourself if you don't get what you expect, a lot of people don't.