1. educator: a person engaged in educational activities. Real educators must have a clear educational purpose and understand their tasks or missions in promoting individual development and social development in practical activities. Those who occasionally affect students' physical and mental development cannot be called educators.

2. Learners: Compared with educators, learners have their own characteristics: different people have different learning purposes; Different people have different learning backgrounds or foundations, which affect their learning interests, abilities or styles.

3. Educational influence: Educational influence refers to all the information that educators act on learners in educational activities, including both the content of information and the form of information selection, transmission and feedback, which is the unity of form and content.