谈数学归纳法的设疑教学

• 作 者: 吴建明
• 机 构: 安徽省五河第二中学
• 出 处: 中学理科参考资料
• 发表日期: 1997年08期
• 关键词: 数学归纳法 设疑 数学命题 复习效果 解题步骤 代数的 正奇数 右广 机械套用 略人

数学归纳法是高中代数的重点,也是难点。它是证明与自然数有关的数学命题的一种常用方法。数学归纳法的内容少,规律性强,在新课的学习中,学生对数学归纳法的原理和解题步骤都已相当熟悉,若在复习时仍按部就班地进行讲授,学生会感到重复,影响学生的学习兴趣,也影响复习效果。为此,一般采用设疑法,可取得良好的效果,具体做法如下:

Mathematical induction is the focus of high school algebra, but also difficult. It is a common way to prove mathematical propositions related to natural numbers. The mathematics induction method has less content and strong regularity. In the new class, students are familiar with the principle of mathematics induction and the problem-solving steps. If students are still taught step by step while reviewing, students will feel repeated and affect students. The interest in learning also affects the review results. To this end, the use of suspicion is generally used to achieve good results. The specific practices are as follows: