In 1990s, Eric Mazur, a physicist and an educator at Harvard University developed peer instruction with computers.
In 2000, the University of Wisconsin-Madison used eTeach softwares to replace lectures by streaming videos.
In 2004, Salman Khan, an educator, recorded videos to help a younger cousin. Khan developed the one to one tutoring and created the Khan Academy. All these experiments were at the origin of the method.
However, the real things began in 2007 with Jonathan Bergmann and Aaron Sams, high school science teachers. They recorded their own videos to help absent students and they decided to use that for all the students. They recorded the lessons and the students had to watch them at home and the following day they discussed about them.