I've seen people teach by playing the open-face (or otherwise simplified version) of a single turn as a way to give an overview of core mechanics.
Naturally, this works better if the 2 hour game consists of dozens of 5 minute turns rather than a few half-hour ones.
If you show one hand of Texas Hold'em, and don't actually play it, but instead talk through what players might be thinking at various points, then you not only cover the mechanics, but sell the game (through the rhetorical device of dramatic irony: you emphasize that the players don't have complete information, and may try to mislead each other, and may come to wrong conclusions even without such deceit, and of course nobody knows what will come on the river...). But of course, it's difficult to disentangle that from a strategy discussion.
Naturally, this works better if the 2 hour game consists of dozens of 5 minute turns rather than a few half-hour ones.
If you show one hand of Texas Hold'em, and don't actually play it, but instead talk through what players might be thinking at various points, then you not only cover the mechanics, but sell the game (through the rhetorical device of dramatic irony: you emphasize that the players don't have complete information, and may try to mislead each other, and may come to wrong conclusions even without such deceit, and of course nobody knows what will come on the river...). But of course, it's difficult to disentangle that from a strategy discussion.