我教了两年二年级的数学新教材,通过前一年半的教学,我发现学生在解题时出现了简单化、表面化、拙劣化的思维现象,主要表现在:在做填空题、判断题和选择题时,很少甚至一点都不在草稿纸上演算(这些题80%左右都是小计算题),只是在脑中“空想”,两三步的题一步就想完了;计算错误率 I taught two years of sophomore mathematics teaching materials. Through the teaching of the previous year and a half, I found that when students solved their problems, they were simplistic, superficial and clumsy. They mainly reflected in the following aspects: Problems and multiple-choice questions, rarely or even not at all on the scratch paper calculus (about 80% of these questions are small calculation questions), but in the mind “dreams”, two or three steps to complete the step by step; calculation error rate