例谈一类只需给出答案的中考题

• 作 者: 吴永刚
• 机 构: 安徽省芜湖市南瑞实验学校,
• 出 处: 初中数学教与学
• 发表日期: 2012年09期
• 关键词: 合情推理 等腰直角三角形 类试 解题能力 数量关系 相似三角形 探究方式 思路探索 内分 四川乐山

近年来,各地中考中出现一类不要具体解答过程,只需直接给出答案的压轴题.这类试题一般先呈现问题情境,提出要研究的问题,然后从具体的或简单的情况开始研究,最后在前面研究的基础上,对一般情形下的结论作出推断.特别是最后一问考查了学生的合情推理能力,给人以想象的空间,可彰显学生思维的个性和解决问题策略的多样性.现举一例说明,供同学们参考,希望对大家复习迎考有所启发.

In recent years, there has been a class of examination questions in various places that do not need to be answered in detail, but only need to be answered directly. Such questions generally present the problem situation first, put forward the problem to be studied, and then start from the specific or simple situation, Finally, on the basis of the previous studies, we make conclusions about the general situation.Especially the last question examines the students ’ability of reasoning and reasoning, gives people the space to imagine, which can show the individuality of students’ thinking and the variety of strategies to solve them Now give an example to illustrate, for the students reference, I hope we review some inspiration.