Before you start your revision it is important that you have a topic list that you can work through to make sure that you cover the whole course. If you don’t have a topic list, you can download the specification for your course (a document that explains what the exam board expects you to have learnt).
If you are in any doubt over which exam you are going to take ask your teacher!
Then you should take some time to go through your notes and review the learning objectives again, indicating for each topic whether you:
It is important that you are honest with yourself when you do this. You will need to seek help with topics that fall into the third category, and go back to the textbook and review those in the second category. This process will help you prioritise your revision for trial papers or the GCSE exam itself.
Here are some ideas to help with your revision:
...and here are links to the specifications from the main exam boards: