Write a couple of paragraphs (~150-200 words) on some technical subject from your topic area. This can be a short overview of a paper, or a description of a common algorithm, a theoretical concept, an implementation method or problem, or an introduction to your project. The paragraphs should be addressed to a general computer science audience, not to specialists in the subject you are writing on.
Note, in two paragraphs, you cannot go into much depth. The goal is to get down a key idea or (at most) two in very clear, simple prose. Give yourself enough time to rewrite the paragraphs at least once, so that you are not handing in a first draft.
You will turn this in along with your expanded reference list.