Ontology knowledge
Ontology knowledge refers to subject knowledge, which is a necessary condition to ensure "correct teaching".
Conditional knowledge
Conditional knowledge refers to the knowledge about teaching and how to solve teaching problems, which is the knowledge needed to ensure the "church". Teachers must master teaching skills and students' emotions, and know how students can learn in order to carry out targeted teaching.
Practical knowledge
Practical knowledge is a person's wisdom and a teacher's educational wit, which is manifested in the ability to handle problems according to circumstances. Teachers need to make value judgments and intuitive judgments according to the principles of behavioral psychology. Value judgment is the result of careful consideration, while intuitive judgment is a pressure judgment and an instant response. Wisdom is the correct judgment that can be made in an instant.