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人教版《义务教育教科书·数学》八年级下册“19.1.2函数和图像”一节中的例2,通过观察和分析函数图像培养学生结合问题的实际背景加深对函数图像意义的了解及从函数图像中获取信息的能力。为了深化学生对函数图像所表示意义的理解和从函数图像中获取信息的能力,笔者对原图像进行了变式,将例2改编成一道开放性题目:如图1,表示明明从家出发,某一时刻明明离家的距离y与所用时间x之间的对应关系,请根据图像编一个故事。
People’s Education Edition “compulsory education textbooks · Mathematics” eighth grade “19.1.2” function and image "section 2, by observing and analyzing the function of image training students to combine the practical background of the problem to deepen the function of the image meaning Understand and get the information from function images. In order to deepen the student’s understanding of the meaning of the function image and the ability to obtain information from the function image, the author made a variation on the original image and adapted Example 2 into an open question: as shown in Figure 1, At a certain moment clearly the distance from home y and the relationship between the use of time x, according to the image of a story.