Problem 1
Write a formal 'Experimental' section. Adopting the style of a research paper (i.e. past tense, all relevant detail reported such that a competent colleague could repeat your work), write out the Experimental for a practical you have recently carried out. Ask a colleague or tutor to comment on what you have written.
Problem 3
Write an abstract for a paper. Pair up with a colleague. Each of you should independently choose a different research paper in a current journal. Copy the paper, but mask over the abstract section, having first counted the words used. Swap papers. Now, working to the same number of words as in the original, read the paper and provide an abstract of its contents. Then compare this with the real abstract. Compare your abstracts.