Teaching is an activity composed of teachers' "teaching" and students' "learning" under the standard of educational purpose. Teaching is the foundation of school education, and the teaching level directly determines the development level of students.

Teaching contains three meanings:

(1) The fundamental purpose of teaching is to cultivate people with all-round development;

(2) Teaching is a common activity of teachers and students;

(3) There are many forms of teaching, which is the unity of generality and diversity.