Need advice to get straight A*/ 9s in GCSEWatch
For sciences you study a topic then maybe have an end of topic test then you move on. What you need to hold in your mind is that you basically will not go back to that topic again. Once you finish a topic check the exam board specification to see if everything has been covered, then look through every past paper you can find and pull out the questions for that topic. Can you answer them? Check the mark scheme to see if you would get all the marks - if not then go back over the topic while it is fresh in your mind. Make flashcards/mind maps at this time too if they are helpful for you. Classes are quite often trying to fit all the syllabus in before the start of study leave - don't assume you will have lots of time to revisit the stuff you did at the start.
For Maths, I can only suggest practising lots and lots of questions until you've done every possible varaint.
In all honesty, and also not to brag but I was a maths genius, however, my stress and panic in exams is what leads me to think I'm really bad at maths. I feel confident in class, but then I start panicking for no reason at exams. For physics, my latest grade was an A but it was JUST an A, I would like to secure all my subjects with 9s.