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函数图像的平移问题,形式多样,变化多端,是学生普遍感到迷惑易错的问题.在教学中,教师往往采用数形结合的方法,引导学生观察、比较、发现并概括总结其中的规律,使学生掌握相关技巧,达到触类旁通的效果.拜读《中学小学数学》(初中版)2012年第10期《谈一次函数的左右移动在教学中的有效渗透》一文后,
In the teaching, teachers often use the method of number and form combination to guide students to observe, compare, find out and summarize the laws in them so that the translation of the function images is various and varied. Students master the relevant skills to achieve the effect of analogy. By reading “Elementary School Mathematics” (junior high school edition) 2012 the tenth period “about a function of left and right movement in the teaching of effective penetration,” a text,