If you teach the Toulmin rhetorical model of argumentation as part of your ENG 201 course, take a look at these materials. These are clear enough with good examples that you could even assign the link as a reading for a 201 course.
The Toulmin Method
When learning written argument, it is always helpful to observe how others argue effectively or ineffectively. The Toulmin method, based on the work of philosopher Stephen Toulmin, is one way of analyzing a text that we read, with an eye toward responding to that particular argument (as in a writing assignment that asks us to respond) and, ultimately, toward analyzing and improving the arguments we ourselves make.
https://writing.colostate.edu/guides/guide.cfm?guideid=58
Teaching Writing at John Jay College 