教师在听课时与学生不应是隔离的,远距离的,应该坐到学生中去,参与到学生的思考、操作和交流中去,从中会得到许多启发和收获。一次我听“沉与浮”这节课,最后环节教师要学生分组比赛,看哪个组能使一块橡皮泥浮在水上,并且在上面放的回形针最多。老师话音一落,学生们马上站立起 Teachers should not be isolated from the students during lectures. Long-distance teachers should sit in the students, take part in the students' thinking, operation and communication, and get a lot of inspiration and gain from them. Once I heard “Shen and float” this class, the last part of the teacher to the students group game to see which group can make a piece of plasticine floating in water, and put the most paper clips on it. When the teacher's voice dropped, the students immediately stood up