The discussion section differs from the analysis and evaluation sections in that it adds more than technical contributions to the report but also places the experiment in a real world context (by exploring what the specific findings mean and why they are important).
This connects directly to the conclusion which generally touches on similar points.
Normally, the method is given out as part of the practical notes and very rarely would you be required to rewrite it, although you may have to note any alterations.
Some lecturers will be happy with a reference to the method, e.g.
If the amount of raw data is excessive, consider presenting it as an appendix. "the concentration of protein in serum sample xyz was found to be xx g/L, which is within the normal reference range"), or it may even be a tabulated summary of results.
It should always reflect the question(s) posed in the Aim(s).
Though some aspects of the conclusion may seem repetitive, it's necessary to repeat many important points and concerns mentioned throughout the paper.
Not only may your reader forget a lot of relevant issues by the time they reach the end of the paper, but also some readers may never even get through the entire paper (they may just skim the paper).
Sometimes the conclusion is not separate from the discussion, i.e.
you may be asked to give a combined "conclusion/discussion".