Discussion of the idea of the flipped classroom. Doesn't just introduce one approach but a variety of well thought out options, and how some schools are scaling the model. Musallam is worth reading.
I do have concerns that Hooper's videos are 25-30 minutes long in his model. I think he's missing the point as far as chunking information in smaller components and letting students interact with the content.
Not a perfect model but it is an innovation, and both teachers do a much better job of using key vocabulary well, introducing multiple representations intentionally and connected, and providing guides for students. Much better than I think Khan does in his videos.