牛顿第一定律在中学物理教学中始终是一个难点 ,因为在进行此项规律的教学时 ,学生尚未形成在只有保守力做功的情形下 ,物体的机械能守恒的概念 ,因而无法真正理解伽利略的斜面实验 ,只好被动地接受有关解释。怎样才能使学生理解伽利略的斜面实验呢 ?很显然 ,如果我们能够发掘 Newton’s first law has always been a difficult point in physics teaching in middle school, because in the teaching of this law, students have not yet formed the concept of the conservation of mechanical energy of objects in the case of only conservative efforts, and thus cannot really understand Galileo’s slopes. The experiment had to passively accept the explanation. How can we make students understand Galileo’s oblique experiments? Obviously, if we can explore