读了《中小学数学》初中版2009年第5期,在陈圣军的《难辨的“同音式”》里谈到了三类形状相近的式子辨析,内容的选材很好,从文中体会到了式子书写和表达的重要性,特别是式子意义理解、运算顺序的掌握、式子中各数的位置分析等许多重要的信息和整理,在教学中应予以高度重视.长期以来学生对这几个经常作为考点进行测评的式子的理解存在一定的困难,在中学阶段正确理 Read the “primary and secondary mathematics” junior high school edition in 2009 No. 5, in Chen Shengjun's “difficult to distinguish ” homophone “” talked about the three types of shapes similar to the discriminant analysis of the material selection is very good, from the text experience To the importance of expression and expression of the formula, in particular, understanding of the meaning of the formula, the operation of the order control, the position of each type of expression analysis and many other important information and arrangement, should be highly valued in teaching .For a long time students There are some difficulties in the comprehension of these formulas, which are often used as test centers for evaluation. They are correct in the middle school stage