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由于学生长期习惯于用算术解应用题,初接触列方程解应用题往往感到困难。问题就在同学们不会把要求的未知数当作已知条件,再与原有的已知条件放在一起进行分析,找出相当的关系,用等式表示出来。为了突破教学上的这个难点,我在教学中尽量利用图解,画出线段图,列表分析和用直观教具演示,使学生清楚地弄清题里的数量关系,培养学生的分析能力。
Because students have long been accustomed to using arithmetic problems to solve problems, they often find it difficult to solve the problem. The problem is that the students will not ask for the unknown as a known condition, and then put together with the original known conditions for analysis, to find a considerable relationship, expressed by equation. In order to break through this difficult teaching, I try my best to make use of illustration in teaching to draw line drawings, list analysis and demonstration with visual aids so that students can clearly understand the quantitative relationship and cultivate students' analytical skills.