教学论专家余文森教授曾说过:“课堂教学的有效性是指通过课堂教学活动,学生在学业上有收获、有提高、有进步。具体表现在:学生在认知上,从不懂到懂,从少知到多知,从不会到会;在情感上,从不喜欢到喜欢,从不热爱到热爱,从不感兴趣到感兴趣。”学业上有收获,懂了、会了,产生兴趣了,问题就是这么简单明了。但是,一些教学活动却背离了如此明白的原则,言不及义的课堂讨论,轻视学科知识而空谈能力的教学互动等,都应该列入无效的教学一类。只有当有效性作为一种价值观深入到教师和学生的内心 Professor Yu Wensen, a teaching expert, once said: “The effectiveness of classroom teaching refers to the fact that through classroom teaching activities, students gain something in their studies, improve and progress. Understand, from less to more knowledge, never to be; in emotion, never like to love, never love to love, never interested to be interested. ”" Academic gain, understand, will be , Have an interest, the problem is so simple and clear. However, some teaching activities have deviated from the principle of being so clear, the classroom discussions of insubordination, the teaching interaction of disregarding subject knowledge and ability to talk about empathy should be included in the category of invalid teaching. Only when effectiveness as a value goes deep into the heart of teachers and students