“控制变量法”在初中物理教学中有着广泛的应用,是探索问题、分析和解决问题的主要方法。所谓控制变量法是当研究多个因素之间的关系时,往往先控制其他几个因素不变,集中研究其中一个因素的变化对另一个因素的变化所产生的影响,然后找出它们之间的关系,得出结论的研究方法。八年级学生刚学习“控制变量法”相关问题时,学生不理解“变量”也不知道如何控制“变量”。我举了通俗的例子说明:人的健康状况受哪些因素的影响?经过学生讨论,认为受“先天因素、 ”Control Variable Law “ has a wide range of applications in junior high school physics teaching, which is the main method to explore problems, analyze and solve problems. The so-called control variable method is to study the relationship between multiple factors, often the first control of several other factors remain unchanged, focusing on one of the factors of change on another factor changes, and then find out the difference between them The relationship between the conclusions of the research methods. When an eighth grader just learns about the ”control variable method,“ students do not understand ”variables “ nor do they know how to control ”variables “. I cite the popular example shows: What are the factors that affect people’s health status? After the students discussed, that by the ”natural factors,