Flipping the classroom is a teaching technique where the typical lecture and the student work are reversed. Students are assigned to watch a recorded lecture prior to class. With the lecture content covered before class, classroom time can be used differently. Instructors can use the freed-up class time for discussion, group work, or solving problems.
Check out What and How other Lecturer use Flipped Classroom strategy
http://ccnmtl.columbia.edu/enhanced/solutions/flipping_the_biochemistry_classroom.html
http://www.edutopia.org/blog/classroom-management-and-flipped-class-jon-bergmann
http://cft.vanderbilt.edu/guides-sub-pages/flipping-the-classroom/
http://www.cirtl.net/node/7788