okay first make sure you understand everything.....and make sure you can use formulas.
also, brush up on the "applications to society" section for whatever topic your prac will be on - it is usually an outcome in these assessments.
you should have been given an assessment notification with all the outcomes on it - when you are writing everything up after you've done the prac, make sure you cover each one. Often it is useful to do a separate paragraph/section for each one so you don't miss any - because your teacher will be using those outcomes to mark your assessment.
i hope that was useful....the reason i stressed the outcomes thing is that i have seen so many capable students throw marks away because they didnt look at them, so don't be the next victim!