Maths,physics and chemistry website suggestions which could give me courses about certain topics.?

-hello I am a 16 year-old Lebanese student and this summer i am looking forward to take SAT subject tests about maths level 2, physics and chemistry. Well, in school i am the best in those topics and i know I am capable of doing great. But unfortunately, some topics in the test are not taught to students in school because the Lebanese curriculum does not include them. So I decided to learn them by myself (as I did with Logarithm, i saw course on themathpage.com which helped me a lot).

I am now looking for suggestions for similar websites which could introduce me to a wide choice of subjects in maths, physics and chemistry.

I hope you can help me. those subject tests mean a lot and are indispensable for my university applicationshttp://www.khanacademy.org/Type BBC Bitesize into Google. This is a great site.