How long does it take to learn a sub topic in biology so let’s say for microscopy? I usually memorise the content and then I close my textbook and on a word document write down everything I can remember from memory. I use a word document because it’s quicker and easier? This is GCSEs by the way. I have revised some topic I would say about 8 sub topic but that’s it. I have been revising maths as I don’t want to resit it. so how can I cover everything in just 2 days since the exams is on the 16th May