(1) the change of teachers' roles: teachers should change from lecturers of knowledge to instructors of students' learning and activities; (2) the change of students' status: students should change from passive listeners to active participants; (3) Changing the role of the media: changing the media from a teacher's demonstration tool to a student's cognitive tool; (4) Changes in the teaching process: The teaching process has changed from the traditional teaching process of logical analysis to the process of enabling students to acquire knowledge and cultivate their abilities by discovering problems, exploring problems and constructing meanings.