数学中的运动变化问题,包括点动、线动、平行移动、翻折、旋转和滚动等各种运动方式.这类题型的特点是,探求图形中的某一元素的运动变化中,其结论的不变或变化的规律.本文着重从“点动”角度谈谈这类动态问题的解题策略. The problem of motion change in mathematics includes various movement methods such as jog, line movement, parallel movement, folding, rotation, and rolling. The characteristics of such question types are the search for the movement of a certain element in the graph. The invariable or changing law of the conclusion. This article focuses on the problem solving strategies of such dynamic problems from the point of view of “inching”.