Many courses are in the middle, such as chemistry. This year, the last two big calculation problems in the chemistry department of Zhongshan senior high school entrance examination, the teacher focused on the news of combustible ice and analyzed its chemical composition. Last year, my children had classes at his home. Before that, my children's academic performance was average. In class, the teacher will help him sort out his learning situation, and based on textbooks, combined with students' notes, test papers, weak links and existing problems, to overcome them in a targeted manner. Now, my child has been admitted to the ideal high school.