"Selling the move" is a professional wrestling term that refers to the need to make the act convincing in order to keep the audience engaged while not actually harming your opponent. In teaching, the term means to convince your students that the subject matter is worth caring about and being involved with; this task is particularly crucial for general education classes like history that students are only taking because they have no other choice. Remember that just because you might love the subject matter, it doesn't mean that they do.
