在初中“压强”的教学中,对于探究性实验“压力的作用效果跟什么因素有关”,人教版教科书中写到:“在研究一个物理量对某个现象(例如橡皮泥的形变)的影响时,一定要保持其他物理量不变”.据此,有老师认为p=SF是通过控制变量法得到的,教师教学用书中也在“过程与方法”中确定了“ In the teaching of “compression” in junior high schools, for the “experimental effect of stress on the exploratory experiment, it is related to what factors”. In the textbook of the People’s Education Press, “In studying the effect of a physical quantity on a certain phenomenon (such as the deformation of plasticine) In the meantime, some teachers believe that p=SF is obtained through the control variable method, and the teacher’s teaching book also defines the “process and method”.