论文部分内容阅读
随着考试命题的标准化日益普及,如何求解数学选择题已引起了教学同行们的极大重视,近年来多种数学刊物也陆续介绍了多种灵活求解选择题的解法,对此学生均乐意接受,兴致甚高,但教学中我感到向学生介绍“特征筛选法”时,多难顺利接受并灵活运用,其困难主要在于如何捕捉特征、利用特征,为帮助学生攻克这一难点,稳定思维方向,我归纳了如下数种搜捕特征的思考方法(本文的选择题均仅有一个正确选择枝): 一、结构特征
As the standardization of examination propositions becomes more and more popular, how to solve mathematics multiple-choice questions has attracted great attention from teaching peers. In recent years, a variety of mathematical journals have also introduced a variety of solutions for solving multiple-choice questions flexibly. Students are willing to accept this. I am very interested, but when I introduce the feature screening method to students, I find it difficult to accept and use it flexibly. The difficulty lies in how to capture features and utilize features to help students overcome this difficulty and stabilize their thinking. I have summarized several thinking methods for the following characteristics of hunting and arresting (there are only one correct choice for the multiple-choice questions in this article): 1. Structural characteristics