笔者曾在一所乡村小学听一位老师上教科版科学四年级上册《动物怎样生活》一课,教师课前布置学生选择猫、鸡、青蛙、鱼、蝴蝶、乌龟等动物中的一种进行观察,并要求作好记录,在课堂上进行交流。开始上课了,教师让学生将自己观察到的情况在全班进行交流,学生个个都非常兴奋,因为 The author once taught a teacher in a rural elementary school to teach the fourth grade of science version of the book, “Animal how to live” a class, the teacher pre-class layout of students choose cats, chickens, frogs, fish, butterflies, turtles and other animals in one Observe and ask for a record to be exchanged in class. Since the beginning of class, teachers have let students communicate with each other throughout the class on the basis of what they have observed. The students are all very excited because