Classroom teaching seems like the last thing you want to mess up your classroom, but it's not. After doing a series of things, you must accept the results of the class, and the same is true of flipping. Teachers need to summarize whether pre-class preparations and classroom training have met expectations, reflect on deficiencies in design and explanation, and students need to summarize and evaluate their own learning. Finally, teachers and students share together to improve classroom use and progress together.