提高课堂效率,培养学生的自主、合作、研讨、探究的能力,这是显而易见的。教学的目的就是要提高教学质量,教的目的是为了不教,要把课堂还给学生,体现教师主导,学生主体的学习。但如何界定有效课堂和无效课堂,又以什么标准来判断课堂的 It is obvious that to improve the efficiency of the classroom and develop the students’ ability of autonomy, cooperation, discussion and inquiry. The purpose of teaching is to improve the quality of teaching. The purpose of teaching is to not teach, to return the class to students, to reflect the teacher-led and student-centered learning. But how to define the effective classroom and invalid classroom, and what criteria to judge the classroom