the values pursued by educational and teaching activities, the content stipulated in educational and teaching activities, the methods selected for educational and teaching activities, The operation model of education and teaching activities, the basic requirements followed by education and teaching activities, the detection and evaluation system of the quality of education and teaching activities, and the many details that should be paid attention to in the process of education and teaching activities.http://www.china-xuba.com/teaching-products-for-early-language-education/