论文部分内容阅读
《简单的平移作图(一)》是北师大版课标实验教材《数学》八年级上册第三章第二节的教学内容。片断一情境引入师:前面我们学习了生活中的平移,了解了生活中的许多平移现象,下面再介绍几个生活中的平移事例(课件演示:环保志愿者制作同一形式的公益广告图与工人师傅铺矩形地面砖),请回答这几个图案可以通过怎样的平移变换而来? 生:图1可以通过最初的一个图案左右平移而来。图2可以通过一个矩形上下左右平移而来。
“Simple Translation Mapping (1)” is the teaching content of the third chapter and the second chapter of the eighth grade first grade mathematics experiment textbook of Beijing Normal University. A piece of situation introduces the division: In front of us, we learn the translation in life and understand many of the translation phenomena in life. Then we introduce several examples of translation in life. (Courseware demonstration: Environmental volunteers produce the same form of PSA and workers The master paves the rectangular floor tiles. Please answer how these patterns can be transformed by translation. Health: Figure 1 can be translated from the first pattern left and right. Figure 2 can be translated from above and below by a rectangle.