一节课,如何以最少的时间和精力,获取最佳的课堂教学效果。也就是怎样实现课堂教学的有效性。它是教改过程中一个永恒的话题。只有实现了课堂的有效性,课堂教学改革才能实现它真正的价值。有效的教学是所有教育教学改革的共同追求, A lesson, with the least amount of time and effort, to get the best classroom teaching. That is how to achieve the effectiveness of classroom teaching. It is an eternal topic in the education reform process. Only by realizing the effectiveness of the classroom, classroom teaching reform can achieve its true value. Effective teaching is the common pursuit of all education and teaching reform,