I. Knowledge Link (This link designs some topics related to this section to review old knowledge and pave the way for learning this section)

Second, independent inquiry (design some inquiry questions related to the knowledge points in this section, let students play the spirit of group cooperation and inquiry, and summarize the knowledge points in this section through discussion and exchange)

Third, try to apply (design problem groups, so that students can consolidate what they have learned in this section through problem group training)

Fourth, reach the standard in the classroom (design a problem group to examine students' mastery of this section of knowledge)