1, the topic is difficult. "Walking into the Heavy High School" is suitable for students who have a good grasp of the basics of senior one and senior two and want to further improve.

2. Content synthesis. Need to cooperate with the video explanation, Zhejiang Education Edition * * * 20 lesson, basic consolidation chapter 16 lesson, synchronized with the textbook; There are four categories of thinking methods, which belong to more comprehensive content. Through video explanation and a little summary, it is easy for students to accept.