What was more interesting to me is that I realized that I've been working with a version of flipping myself for a couple years. The online lessons that I teach are mostly designed to help students work with and practice material that they have already studied. When they get to class with me, it's my job to help them with any questions they have with the material and to show how the language they're studying is used in everyday conversation.
I imagine the biggest problem with flipping is similar to one that I have in my classes, when students don't do the needed preparation for the lesson, so instead of working with the material you end up using class time explain it to them. Though, if we're being honest, no matter what technique you are using to teach there is always going to be unprepared students, so I don't think that's a good reason to not try flipping.
