Educational structure refers to the proportional relationship and its combination form of all parts that constitute the whole educational system. Generally refers to the school education structure. There are vertical structure and horizontal structure. Vertical structure refers to the phased structure of education at all levels. Mainly includes:

(1) Structure between different education stages, such as preschool education, primary education, secondary education, higher education, etc.

(2) Zen structure, that is, the proportion of normal education at all levels, such as the structure between kindergarten teachers, normal schools and normal universities;

(3) the structure between different levels in each stage. For example, there are junior college, undergraduate and graduate students in the higher education stage; Secondary education includes junior high school and senior high school. Horizontal educational structure refers to different types of educational forms in different educational stages.

Teaching emphases and difficulties:

The focus of teaching is the learning task put forward in the textbook, which exists objectively in the textbook. The key is the teacher's accurate understanding and grasp, which is the relationship between "teacher and teaching material".

The teaching difficulty is the gap between specific teaching tasks and students' subjective knowledge and ability level, that is, the relationship between "teaching materials and students", which requires teachers to accurately judge students' ability level according to teaching requirements.