物体密度测量实验是历年中考重点考查的几个实验之一,也是同学们学习的难点.说它是难点,首先是问题情境的多样性,既有用常规办法解决密度测量问题的,也有需要学生经过探索创新才能找到解决方法的;其次是用到的工具多,所涉及到密度 The object density measurement experiment is one of the several experiments that test the key points over the years and it is also a difficult point for the students to learn.It is a difficult point to begin with and it is above all the diversity of the problem situations that both the conventional measurement of density measurement and the need of students Explore innovation to find a solution; followed by the use of more tools, the density involved