What is  the Flipped Classroom?

Modern technology has spurred on a new trend in education: flipped classrooms. In a flipped classroom, students watch lectures and supplemental materials for their classes at home, usually pre-recorded by their instructors and uploaded to the web. Classroom time is then used for answering student questions, helping with homework, and other activities that help students apply what they’ve learned.  Here’s a good look at how teachers are 15 ways teachers are using the Flipped Classroom.   How  would you use the flipped classroom?  Have you used it?