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动态问题是近年中考数学试题的热点题型,解题时需要运动和变化的眼光研究图形运动变化过程,综合运用数形结合、类比、转化等思想方法解决问题。本课题组经过研讨,共同商定了专题复习研讨课《动点问题——和最小》的教学流程(运用课件展示)。一、知识梳理师:数学中常见求两段折线和最小的问题,本节课首先通过复习旧知来解决这个问题!1.线段的性质:两点之间的连线中,线段最短。2.轴对称的性质:成轴对称的两个图形全等。【设计思路】温故而知新,通过复习,为运
The dynamic problem is a hot problem type in the mathematics test of senior high school entrance examination in recent years. When solving a problem, it is necessary to study the change process of the figure movement with the vision of movement and change, and solve the problem synthetically by the methods of combination of numbers, analogy and transformation. The group after discussion, agreed to discuss the topic review seminar “point of issue - and minimum” teaching process (using courseware display). First, the knowledge of combing division: Mathematical mathematics is often asked two polylines and the smallest problem, this lesson first by reviewing the old knowledge to solve this problem! 1 line segment nature: the connection between two points, the shortest line segment. Axisymmetric nature: Axisymmetric two graphics congruent. 【Design Ideas】 Therefore, we can learn from the new, through the review, for the transport