Your article reviews should include all 3 articles posted (one page for each article, make them separately )and could also pose questions for discussion, contest points, and provide critical commentaries. P just go straight to argue your opinions from the first sentence of your review and provide deep understanding and commentaries. You can also pick specific paragraphs or angle to analysis your point of view. There is no other research needed, just focus on these 3 articles. The sentences and grammar should be simple and easy to understand since it is not a formal essay, it is just a oral presentation.