Teaching method belongs to educational means. Educational means refers to various means, tools and methods adopted by educators in the process of education and teaching, including teaching approaches, educational technologies, teaching materials and teaching evaluation. Teaching methods refer to the specific methods and approaches adopted by teachers in the teaching process, including lectures, demonstrations, discussions, research, experiments and case studies. Teaching method is usually a part of educational means, a concrete way and means to realize educational means, and a concrete embodiment of educational means in teaching practice.