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在数学选择题中,编题者经常会在题中设置一些迷惑区,使学生在不知不觉中进入其中,从而使解题的准确率大为降低.因而弄清楚选择题中的迷惑区设置,是提高学生数学成绩的必经之路. 一、迁移性迷惑相似的内容,常使人进行类比,思维的定势,常会令人产生负迁移,从而导致程式化、模式化的解题. 例1 在椭圆(x2)/45+(y2)/20=1上有点P,F1、F2是椭圆的左、右焦点,且△F1PF2为直角三
In mathematics multiple-choice questions, editors often set up some confusion areas in the questions so that students can enter them unknowingly, so that the accuracy of problem solving is greatly reduced. Therefore, the confusion area settings in the multiple-choice questions are clarified. , is the only way to improve students’ mathematics achievement. First, the migration confuses similar content, often make people analogy, the tendency of thinking, often causes negative migration, resulting in stylized, model-based problem solving. Example 1 A little P on the ellipse (x2)/45+(y2)/20=1, F1, F2 are the left and right focus of the ellipse, and △F1PF2 is a right angle three