Flipped learning is a pedagogical model in which the elements of face to face learning and homework of a study unit are reversed. Students participate in video lectures at home before the class meeting. In-class time is then used to discussion, implementation of the theoretical knowledge, excercises and/or projects. The video lectures are considered important. They are constructed by the teacher and realized online or they can be found in and selected from an online repository.
A lot of good information on flipped learning can be found in internet. Below an illustrated example of flipped learning (Schneider, Munro & Krishnan 2014).