Track List In Classical Composition IV: Refutation & Confirmation , there are two sets of exercises, Refutation and Confirmation, which would correspond to an argumentative essay in modern composition theory. The students are learning how to structure their thoughts, and thus their communication process, when given the Memoria Press product: https://www.memoriapress.com/curriculum/writing-and-english-grammar/classical-composition-iv-refutation-confirmation-online-instructional-videos-streaming/