1. Educators view the “Flipped” model with a more critical eye;Ash;Education Week,2012
2. Flipped classrooms: turning learning upside down;Baker;Deseret News,2012
3. Meet Sal Khan: The Seinfeld of the education revolution;Barseghian,2011
4. Flip your classroom: Reach every student in every class every day;Bergmann,2012
5. Active learning: Creating excitement in the classroom;Bonwell,1991