一道暴露学生知识误区的典型题

• 作 者: 翁丽平
• 机 构: 广东省珠海市金鼎中学,
• 出 处: 中小学数学(初中版)
• 发表日期: 2004年期
• 关键词: 几何知识 变式 判定定理 平分线 证明方法 证明题 人教版 证法 错解 主观臆断

初三学生在学习《圆》这章内容时,经常要用到前面学过的几何知识,综合性较强,因此在解答圆的相关题目时,有的学生常常会因为对前面学过的几何知识理解不深刻、主观臆断而想当然,造成逻辑推理混乱,漏洞百出.现就一道典型题中学生出现的知识漏洞进行剖析,希望对大家有所帮助.例题

Third grade students learning the “round” of this chapter, often used in front of the geometric knowledge learned, comprehensive, so in answering the circle related topics, some students often because of the previously learned geometry Knowledge is not understood profoundly, subjective assumptions and taken for granted, resulting in logical reasoning chaos, full of loopholes. Now on a typical problem of middle school students to identify loopholes in the knowledge, I hope to be helpful.