1引言情景设置对于物理教学非常重要,帮助学生建立形象的物理图景有助于促进深刻理解物理内容.中学物理中直线运动主要有沿水平方向运动、沿竖直方向运动及沿斜面运动三种情景.在探究加速度与力、质量的关系时,如果能引导学生在各种情形下展开探究,将有利于加深对牛顿第二定律的理解,有利于提高实验的设计能力,有利于构建立体化的知识 1 Introduction Situational setting is very important for physics teaching to help students create a physical picture of the image helps to promote a deep understanding of the physical content of the middle school physics linear motion are mainly horizontal motion, vertical motion and along the ramp motion of three scenarios In exploring the relationship between acceleration and force and quality, if we can guide the students to explore in various situations, it will be helpful to deepen the understanding of Newton ’s second law, improve the design ability of the experiment, and help to build a three - dimensional know how