1, theme determination stage: first, students report problems found in practice; Second, discuss and analyze problems and turn them into topics; Third, students are naturally grouped according to their own interests;

2. Planning stage of comprehensive practical activities: first, students plan activities; Second, students will report and exchange group plans in the whole class; Third, students discuss the plans of each group; Fourth, students improve the plan according to the discussion;

3. Stage exchange class in the process of activity implementation: First, students report the activity process in groups; Second, the interaction between teachers and students, put forward the difficulties encountered in the process of activities; Third, guide students to discover the generated themes;

4. Summary and exchange stage of comprehensive practical activities: 1. Why did you choose this issue for research? Second, after choosing this theme, how did you plan the activity? Third, please give an example of what you learned the most in the activity.