一、导入新课师:同学们带来自己找的蚯蚓,都很想研究它,下面同学们小组交流一下:1.你是在哪里找到蚯蚓的?2.你找到的蚯蚓是怎样的?(学生拿回蚯蚓来到实验室,急于展示自己找到的蚯蚓和小组成员间相互交流,让孩子们在五分钟内交流和观察,以提高他们学习的兴趣及提起他们探究的热 First, the introduction of a new class teacher: students bring their own looking for earthworms, would like to study it, the following exchange of classmates about the group: 1. Where did you find earthworms? Returning the earthworm to the lab, students are eager to show that the earthworm they found and the group members communicate with each other, allowing the children to communicate and observe within five minutes so as to increase their interest in learning and bring up the heat they are exploring