“物体的浮沉条件”是人教版物理教科书八年级下册第十章浮力第3节“物体的浮沉条件及应用”第1课时的内容.肖云芳老师就该课时内容参加了鹰潭市2014年4月16日优质课比赛.1课堂实录上课前,在学生陆陆续续走进教室的这段时间里,教师放出课件画面——“鹰潭信江两岸”.远远望去是横跨信江的浮桥与倒影,近看是信江河水与岸边青草绿地以及垂下来的杨柳 “Object floating conditions ” is the textbook of the PEP teaching volume eighth grade bursts tenth chapter buoyancy section “the object swoosh conditions and application ” content of the first class.Xiao Yunfang teacher participated in the contents of the class of Yingtan City April 16, 2014 quality class competition .1 class record before class, students gradually came into the classroom one after another, the teacher released courseware screen - “Yingtan River Cross.” From afar The bridge and reflection across the river, near the river is believed to be the river and green grassy banks and the hanging willow