The flipped classroom is an idea that started in 2007. Two teachers, Jonathan Bergmand and Aaron Sams, in Woodland Park high school in Colorado recorded their lectures. They asked their students to view the videos online and to use classroom time for working on the concepts in the videos. Homework is essentially done in class while the introduction of the topic is done at home on the student’s schedule. After seeing the instructional videos at home students come to class to collaborate with other students to ask questions of the teachers and to master the concepts that were introduced in the videos. What this method highlights is the asynchronous introduction of learning material into video format and the much more productive use of classroom time to collaborate on understanding.