Explain the relationship between the effective principle and the student-centred principle.
教师解析：
The two principles are interrelated: on the one hand, to conduct the effective principle, teachings activities must be student centered and must obey the student-centered principle; on the other hand, teaching activities based on the student-centered principle are certainly effective in practice. They interact with each other and reciprocate each other.
After learning this section, have you known the third pricinple? Let’s make a summary.
