1. Grinding class refers to the class that combines the teaching experience accumulated at ordinary times with the wisdom of the team members and the trial teaching process before the public class.
2. A word of "grinding" indicates the repeated revision and consideration, which cost teachers a lot of sweat.
3. However, the word "grinding" in this grinding lesson is just like a swordsman who has honed his sword and cultivated his morality for ten years, which shows the hardship and difficulty of a successful and good lesson.
4. The models of grinding lessons are: basic, simplified, heterogeneous, improved teaching diagnosis, action oriented.
