有效,主要是指教师经过一段时间的教学后,学生所获得的具体的进步和发展。一堂课,如果学生主观上不想学或学了没有收获,没有得到相应的发展,那也是无效或低效教学。可见,教师花了多少时间,“讲”了多少,并不能成为一堂课有效无效的标准;具体应看学生通过学习,“学”到了多少知识,获得了怎样的发展。 Effective, mainly refers to the teachers after a period of teaching, students get concrete progress and development. A lesson, if students do not want to learn subjectively or learn not gain, did not get the corresponding development, it is ineffective or inefficient teaching. Visible, teachers spent how much time, “talk ” how much, and can not become a lesson valid and invalid standards; specific should see students through learning, “learning ” how much knowledge to get what kind of development.