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《中小学数学》(初中版)2010年第12期刊登了《令学生费解的图形》一文,提出了学生在讨论人教版八年级上册(2008年3月第二版)第152页中的思考:你能根据图形15.2-1中的面积说明平方差公式吗的问题时,学生所遇到的困难和老师心中的疑问.疑问1:为什么要将正方形GFNH与长方形ABHM着同样的颜色?疑问2:为什么不将线段FN及NH用虚线表示?阅读后颇有感触,为作者能如此认真研究教材、关注学生学习而深感敬佩.
“Primary and secondary mathematics” (junior high school edition) in 2010 twelfth published “to make students understand the graphic” article, students in the discussion PEP eighth volumes (March 2008 second edition) on page 152 Thinking: Can you explain the problem of the squared difference formula according to the area in Figure 15.2-1, the difficulties encountered by the student, and the questions in the teacher's mind. Question 1: Why Square GFNH is the same color as the rectangular ABHM? 2: Why do not line FN and NH in the dotted line that? After reading a lot of feelings for the author so seriously study materials, attention to student learning and deeply admired.