“细节决定成败”。课堂上的细节体现教师高超的教学艺术。细节,决定着课堂教学的质量,决定着教学过程的丰富程度。著名特级教师于永正老师的课既温厚敦实、血肉 “details make a difference”. The details of the classroom reflect the superb teaching art teacher. Details determine the quality of classroom teaching, determines the richness of the teaching process. The famous teacher in Yongzheng teacher’s lesson is warm and honest, flesh and blood