1.1 The Definition of the Flipped Classroom Teaching Model

Flipped classroom is to readjust the time inside and outside the classroom, the decision to learn the right to transfer from the teacher to the students. In this teaching mode, the students can focus more on the project based learning, to solve the problem of localization and globalization, and to obtain a deeper understanding. Teachers will not take up the time to teach information, the information needs of students to complete their own learnings. They can watch video lecture, listen to the podcast, read the function of enhanced e-books, but also on the network with other students to discuss the need for any time.

Ding Jian Ying, Huang Yan Bo, Zhao Hui scholars on the definition of flipped classroom, flip the classroom is relatively traditional classroom teaching process. In the traditional teaching process, the teacher in the classroom "imparting knowledge", and the knowledge of the process left to the students to complete the process, which leads to the application of teacher-student interaction, peer communication and collaboration of the classroom, often being a teacher to teach knowledge".

Zhang Wen Lan scholars believe that the concept of "upside down" in the concept of the traditional teaching mode. In traditional class, teachers teach knowledge, students listen carefully, teaching and learning is a kind of one-way knowledge transfer. In the course, students are lack of teachers' guidance and help. "Upside down" is the students' learning materials, and the problems in the course of learning, and to guide and help them to solve problems.

Dong Xu Yang, Hu Wen, a scholar of the definition of flipped classroom, the classroom is the teacher in the classroom before the teachers will be taught to record the knowledge points, released on the network, the students learn by watching this video for new knowledge. Time in the classroom, students can according to the practice, don't understand to ask teachers, or with other students to communicate, to achieve real-time answer to problem solving. This teaching mode and the traditional classroom teaching, the students do homework in the way is precisely the opposite, so, is called the flipped classroom.

1.2 The Origin and Development of the Flipped Classroom Teaching Model

Nowadays, the flipped classroom model is becoming a new wave of education reform at home and abroad, which provides a different way for the further development of teaching and learning. In 2011, it was even awarded by the Globe and Mail as “the major technology evolution affecting class teaching”. Flipped classroom actually origins form the Woodland Park High School in the shadow of Colorado’s Pike’s Peak in America. In the spring of 2007, chemistry teachers Jonathan Bergmann and Aaron Sams struggled to find time to reteach lessons for absent students, thus they bought a software that allowed them to record and annotate lessons, and posted them online. Surprisingly, not only absent students but also those who hadn’t missed class appreciated the way to review and reinforce classroom lessons. And soon, Bergmann and Sams realized they had the opportunity to radically rethink how they used class time. Since students has watched videos before class, two teachers made full use of class time to provide help for slower students. This is called the “flipped classroom”. 

The core idea of the flipped classroom is to flip the common instructional approach: With teacher-created videos and interactive lessons, instruction that used to occur in class is now accessed at home, in advance of class. Class becomes the place to work through problems, advance concepts, and engage in collaborative learning. 

During the implementation of the flipped classroom, the online videos mentioned above are accepted by more and more students, which even leads to the breakdown of the online system. Meanwhile, this unusual attempt attracts more attentions among schools, parents, educators and other communities. After the “open house day” was launched in the Woodland Park High School, the idea of flipped classroom was greatly spread over.