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At the moment i am doing foundation paper for science but our miss said if i got good marks on mocks then i can do the higher paper. but i aint got the higher ocr gcse science book(da red 1). if i search for this book, they ask me to buy it but i want to revise it for free as well as on online. plz help me out...tel me how do i revise it online and where can i find it to revise.

We got our books for free from school when i did my gcses the other year so why dont you ask for the other book aswel? im sure theylll give you it!or tryhttp://www.bbc.co.uk/schools/gcsebitesize/