I'm struggling to find some effective practice questions for AS physics, biology and chemistry for OCR. I have the textbooks and revision website and I know the content...I just need a LOT of practice. Harder questions for these subjects can give me a solid and more firm understanding of the topics, so that come exam time, I am confident fully prepared for almost any question :))
So, can someone please tell me really good sites that allow me to do questions and questions WITH answers.
Thanks everyone :) much appreciated
P.S. I have already checked out the OCR websites for past papers