“长度的测量”是开启学生进入丰富多彩的运动世界的钥匙。本小节的教学效果直接影响学生对本章知识的学习兴趣,学生对新知识的掌握情况,关系到对“速度”的学习是否顺利,对与长度单位换算相关的计算产生深远影响。因此,本节在整个初中物理教学中的重要性不言而喻。 “Length Measurement ” is the key to opening students into a colorful, sporty world. The teaching effects in this section directly affect the students ’interest in learning this chapter, the students’ grasp of new knowledge, the smooth learning of “Speed ​​” and the profound impact on the calculation related to the conversion of length units. Therefore, the importance of this section in the entire junior high school physics teaching goes without saying.