Australia- Travel Papers?

I am 15 and I am going on a foriegn exchange to aulstralia. I am flying by myself and am not sure what papers i need. I have my passport and birth certificate, but do I need anything else. Also do I need a visa even if I am only going for 5 weeks.

Depends - where are you traveling from?

The best place to look for information about visas and any necessities is the Department of Immigration web page at http://www.immi.gov.au

If you have your passport, you won't need a birth certificate. All your birth details and proof of age are in your passport.

If you are doing an exchange program, i suggest contacting the company who is organising it for you, they will let you know what you require to come out here.