To define the concept of "The flipped classroom" I will use as reference the work "The flipped classroom: A Survey of the Research" of Bishop (Utah State University) and Verleger (Embry-Riddle Aeronautical Univ., Daytona Beach).

In their paper, they compare some definitions of the flipped classroom, such as:

"The flipped classroom means that events that have traditionally taken place inside the classroom now take place outside and vice versa.

(Lage, Platt and Treglia. Reversing the Classroom: A Gateway to Creating an Inclusive Learning Environment The Journal of Economic Education, 30-43, 2000)

They also refer to Piaget and Vygotsky's citing student-centered learning theories, and how the flipped classroom employs interactive group learning activities within the classroom.

Bishop and Verleger say that "the flipped classroom label is most often assigned to courses that use activities composed of asynchronous web-based video conferencing and problems or closed tests. In many traditional courses, this represents all the instruction students receive. Thus, the flipped classroom actually represents an expansion of the curriculum, rather than a mere reorganization of activities.

Finally, the authors propose the definition of flipped classroom "as an educational technique consisting of two parts: interactive group learning activities within the classroom, and direct individual computer instruction outside the classroom".

Finally, they restrict this definition to "exclude designs that do not employ video as an activity outside the classroom. While a broad conception of the flipped classroom may be useful, definitions that become too broad suggest that the assignment of reading outside the classroom and the conduct of class discussions constitute the flipped classroom.

They reject these definitions for two reasons. "First, if too liberal a definition is used, it becomes impossible to assess the effectiveness of the flipped classroom. Second, students tend not to complete the assigned readings. Therefore, the effectiveness of such a method will not tend to match our definition.

Paper

http://docbishop.com/wp-content/uploads/2014/02/Resume2014.02.pdf

video and infography

https://sites.google.com/site/blendclass/flipped-classroom