The term 'flipped classroom' gained popularity around 2007 from teachers Aaron Sams and Jon Bergman (from Woodland Park High School, Colorado, USA). They realised that class time would be better spent guiding knowledge and providing feedback rather than delivering direct instruction. Bergman and Sams (2012) found that direct instruction could be delivered by recording video content for students to engage with before class (and any time), therefore freeing up class time for activities that allow deeper exploration of content.
The key purpose of the flipped classroom is to engage students in active learning where there is a greater focus on students' application of conceptual knowledge rather than factual recall.
Adapted from 'What is the Flipped Classroom?', University of Queensland,
http://www.uq.edu.au/teach/flipped-classroom/what-is-fc.html (date accessed 1/6/17)
There are many good reasons to introduce flipped classroom pedagogy into your teaching practice.