在《物质性质的初步认识》这部分内容中,同学们由于对长度的测量方法没有彻底掌握、对质量概念的混淆和密度测量方法不清而常出现一些错解,常见错误如下:一、对刻度尺方法的使用不清例1小明同学测某物体长度时,情景如图1,则物体长度__cm。 In the part of “preliminary understanding of the nature of matter”, some mistakes often occur because students do not fully grasp the measuring method of length, and the methods of confusion and density measurement of quality concepts are unclear. Common mistakes are as follows: The use of scale method is not clear Example 1 Xiaoming students to measure the length of an object, the situation shown in Figure 1, the object length __cm.