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一、案例背景旋转是现实世界运动变化的最简捷形式之一,它不仅是探索图形变换性质的必要手段,而且也是解决现实世界中的具体问题以及进行数学交流的重要工具,通过对本章内容的复习,既培养了他们的动手操作能力,又培养了他们用数学的方法来解决实际生活中的有关问题。二、案例描述【片段1】多媒体展示几幅利用图形变换方法得到的图案师:这几幅图案来自于实际生活,它们是通过什么方法得到的?生1:通过旋转方法设计的。
1. Case Background Rotation is one of the simplest forms of movement in the real world. It is not only necessary to explore the nature of graphic transformation, but also an important tool for solving specific problems in the real world and for conducting mathematical exchanges. By analyzing the content of this chapter Review, not only trained their hands-on ability, but also trained them to use mathematical methods to solve the problems in real life. Second, the case description [Fragment 1] multimedia show several patterns using graphics transform method to get the division: These patterns are from the actual life, they are obtained by what method? Health 1: Design by the rotation method.