Would you like to ask whether to have a math class or a class in Lanzhou? Class begins first. According to official website, a junior high school online query, the first math class in Lanzhou is preparatory course, and the first math class in the new junior high school is to use free time to connect the basic knowledge, mathematical ideas and problem-solving methods of junior high school mathematics in advance, to help students who are about to enter the new junior high school, and to make full use of summer vacation time, which can not only adapt to the changes in thinking forms and learning methods, but also adapt to the leap of knowledge and the depth of content.