You'd better continue your major. Pedagogy belongs to the discipline of comparative theory. It mainly studies the nature, direction and methods of education, and studies education, not how to teach mathematics. It is the feeling of guiding theory, and it is an abstract thing. If you want to take the postgraduate entrance examination and find a job in the future, there are several points that may be important. Do you want to go back to your hometown? If you want to return to your hometown, you can choose a good university in the province. If it doesn't matter, it is a good university within your ability. A good university must have a title, 2 1 1, 985. Everybody knows that.