数学中考中的动态题具有较大的区分度,对学习者的解题能力要求较高,在日常学习中,学生也经常遇到这样的问题,题型稍作改变,就束手无策,化动为静是解决这类问题的重要方法,而明确研究对象和运动过程是关键。例1(烟台)如图l,一块等边三角形的木板,边长为l,现将木板沿水平线翻滚,那么点B从开始到结束时,所走过的路径长度为 Dynamic test questions in mathematics test have a greater degree of differentiation, higher requirements for learners to solve problems, in daily learning, students often encounter such problems, the question a little change, helpless, move into Static is an important way to solve such problems, but the clear research object and the movement process is the key. Example 1 (Yantai) Figure l, an equilateral triangle of wood, side length l, the board is now tumbling along the horizontal line, then point B from the beginning to the end, the length of the path traveled by