All great answers, thank you. My goal isn't to have them become cracker-jack developers, but rather to get a good enough sense of how web applications work that

All great answers, thank you. My goal isn't to have them become cracker-jack developers, but rather to get a good enough sense of how web applications work that they have a better idea of what developers do and how to talk with them. In the past I've typically had them complete simple exercises—with lots and lots of scaffolding—using different technologies in the stack.