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Preparing for ISA paper 2

My exam board is AQA, and soon I'm going to be doing paper 2 of my springs/pendulums ISA. I got 17/20 on the first paper, which is decent and I'm happy with it (especially considering how little information my teacher actually gave us).

How would I go about securing top marks on the second paper? It's always been my worse one, I only got 20/30 on it the first time I sat it, which made me end up with a B. What would you recommend to prepare for it? I don't really have a problem with the first few questions which have me analysing my own results, I usually lose marks later on when it comes to the case studies/context.

Thank you, any help is appreciated.