Goodrider, an American scholar, thinks that there are five different courses:

(1) The ideal course refers to the courses that some research institutions, academic groups and course experts should offer.

(2) The formal curriculum refers to the curriculum plan, curriculum standards and teaching materials stipulated by the administrative department of education.

(3) The process of understanding refers to the process of teachers' understanding.

(4) Operation courses refer to courses conducted in or after class.

(5) Experience course refers to the course that students actually experience.

Therefore, it is reflected in the types of courses operated.