对一个习题的建构性探究

来源 :中学教研 | 被引量 : 0次 | 上传用户:volcano928812
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
所谓建构性探究就是立足于引导学生在理解数学知识的基础上建立知识系统和网络,形成良好的认知结构。高中数学课本中的习题,大都以特殊事例出现,有些具有良好的生长点,对这些题目仔细分析,深入探究,能品味出内涵,以此形成知识体系。现以《平面解析几何》P.112第10题为例。 The so-called constructive inquiry is based on guiding students to build a knowledge system and network based on understanding mathematics knowledge and form a good cognitive structure. The exercises in high school mathematics textbooks mostly appear with special cases. Some of them have good growth points. A careful analysis of these topics and in-depth exploration can savor the connotation and form a knowledge system. Let’s take the tenth problem of Plane Analytic Geometry P.112 as an example.
其他文献
The polysaccharides,FIII-2,FIII-2-a,FIII-2-b and FIII-2-c were purified from the fruit body of Ganoderma tsugae(G.tsugae) to study the effects of the four polys
The adsorption of O and N atoms on the Ni(311) surface was investigated by the 5-parameter Morse potential(5-MP) method in detail.For the O-Ni(311) system,there
ZnO nanorods were synthesized using the sol-gel method, and the effects of annealing temperature and Ce doping on the morphologies and optical properties of ZnO
A new adenosine biosensor based on aptamer probe is introduced in this article. An amino-labeled aptamer probe was immobilized on the gold electrode modified wi
<正> 凡做教师的都希望自己的课是“好课”。但什么是“好课”?课堂教学的评价标准究竟应该是什么?这是我们在教学工作中最常碰到,并关心最多、思考最多的问题。 (一)好课的
<正> 一、前言随着反应堆运行时间的增长,一回路管道内壁的腐蚀层越来越厚,冷却水中的杂质活化后的产物越来越多地沉积在一回路的管壁上,燃料元件发生破损事故时裂变产物也会
2001年全国高中数学联赛加试中的平面几何题。题目1 如图1,△ABC中,O为外心,3条高AD,BE,CF交于H,直线ED和AB交于点M,FD和AC交于点N。