《物体在水中是沉还是浮》是教科版小学科学五年级下册第一单元的内容,属于“物质世界”范畴,科学《课标》对这类课的要求是:能通过对身边自然事物的观察发现和提出问题,能通过观察、实验等活动进行探究,意识到科学就在我们身边,体会到科学探究的乐趣。新课程理念要求教学过程不仅是学生的认知过程,而且是学生心理体验的过程,亲身经历更是师生间相互交流、相互促进的过程。为此,本课中“能对物体的沉浮作出预测,并用实验的方 ”Objects in the water is sinking or floating“ is a textbook elementary school science fifth volume of the first unit content, belong to the ”material world“ category, science ”class standard“ for such class requirements are: can pass by Observation of natural things to discover and ask questions, through observation, experiment and other activities to explore and realize that science is around us, to experience the fun of scientific inquiry. The concept of the new curriculum requires that the teaching process is not only a process of students ’cognitive process, but also a process of students’ psychological experience. Personal experience is more a process of mutual exchange and mutual promotion between teachers and students. For this reason, in this lesson, ”can predict the ups and downs of the object, and use the experimental side