Your first step in completing this assignment is to choose a field of drama for analysis. The four primary types of drama are tragedy, comedy, tragicomedy, and melodrama. You will want to choose one of these for your analysis.
An analysis breaks something down into its parts and examines those parts in detail to draw conclusions about the thing as a whole. If you are going to analyze tragedy, for instance, you might look at the six primary elements of tragedy identified by Aristotle: plot, character, diction, thought, spectacle, and song. Define each of these elements and show how it contributes to the overall effect of a tragedy.
To do this even more effectively, you might want to select a tragedy (or two) and analyze its primary parts. You might choose Hamlet or Antigone, for example, and discuss how each of them combines the necessary elements to bring their characters and plots to their tragic ends. Think about Hamlet's major flaw, for instance, or the role of the chorus in Antigone.
As for five academic articles, you can find those by visiting your library's website. Look for an article search feature, and type in your chosen dramatic field. You will come up with plenty of hits, and you can look through them to see if anything strikes you as useful. Be sure to narrow your search to just articles, though, as sometimes book results will also show up on the list.
If you want to narrow your search a bit more, try search terms that include the field and one of its elements, like "tragedy plot" or "tragedy diction." You might also try search words containing your example plays, like "Antigone diction" or "Hamlet plot."
For me, "Hamlet plot" turned up the article "Dramatic Structure and Criticism: Plot in Hamlet" from the Shakespeare Quarterly. That might give you some interesting insights.