加强解题反思 优化思维品质

众所周知,解题教学是数学教学的重要组成部分.习题在帮助学生掌握基础知识、基本技能,巩固和强化记忆,训练和培养学生良好的学习习惯,发展学生的创造性思维能力等方面都有十分重要的作用.那么,如何进行解题教学才能充分挖掘命题潜在的功能价值、优化学生思维品质呢?解题教学的实践表明,加强解题后的反思是充分发挥解题教学功能的有效途径.怎样进行解题反思呢?笔者的体会是:1.反思解题过程当某个数学命题解答完毕以后,教师启发学生回过头来检查结果是否正确、全面,推理是否逻辑、条理,论据是否严谨、充足,解答是否具有规律性等等.对解题过程…     

摆脱解题“困境”的实用策路

解题过程遇到挫折，陷入“困境”是难免的．如何排除障碍，走出困境，成功解题，既是学生的心愿也是教师的责任．我们在长期的教学实践中探索出一些策略，有效地提高了学生的解题能力．现介绍如下，供参考．[第一段]     

在解题反思中探索发现——以初中数学解题教学为例

<正>问题是数学的心脏,解题是教学的核心.针对学生而言,最直接的表现方式就是解题.解题过程是学生心理活动和思维能力的切入过程.培养学生解题能力要从实践、感悟、内化入手,让学生对自身思维结果进行验证和再认识.如果没有解题反思,学生数学思维就会停滞不前.因此,注重数学解题反思尤为重要.一、解题反思利于教学拓展数学解题过程可以被称之为采蘑菇现象.当人找到了第一个蘑菇之后一定会环顾四周是否有其他蘑菇.解题过程也是这样,不仅能帮助学生形成一定的认知结构,也能激发学生     

例析简化解析几何运算的五种策略

众所周知,解析几何知识是高中数学的重要内容,对解几综合题的考查已成为历年高考的热点．而其解答的烦琐程度往往受制于解题方法和策略的选择．对于很多问题,由于学生解题方法选择不当,而导致计算量过大、过程繁冗,甚至半途而废．因此在实际解题过程中,选择恰当的方法和掌握一定的运算策略对优化解题过程、便捷而准确的解题至关重要．[第一段]     

解题分析，应该有“第二过程”的暴露（续二）——写在《数学解题学引论》第5次印刷

3进行解题分析的操作 进行解题过程的自觉分析,是从数学内部去寻找提高解题效率的一种努力,是通过已知学未知,通过分析“怎样解题”而领悟“怎样学会解题”的一个过程．分析解题过程通常要经过两个步骤：整体分解与信息交合．（参见文[10]P．326）     

例谈解题方法的严密性问题

为使解题方法严密，首先要考虑解题步骤的合理性，发展学生逻辑推理能力．解题步骤的合理性，是指正确应用数学概念，熟练运用相关定理、公式，推理符合逻辑、表述条理清晰的解题过程．合理的解题步骤，体现了一定的逻辑推理能力．反思解题步骤，就是审视解题过程中的每一步是否“言必有据”，是否符合逻辑要求，是否有多余的表述．     

探究教学实践中对学生数学思维培养的途径

数学是思维的体操,数学教学是关于数学思维的教学,这些都告诉我们数学思维在数学和数学教学中的重要地位.通过具有丰富数学思维的数学教学,可使学生的数学思维能力得到提高、理性精神得以培养.本文根据教学实践以及文[1]和[2]的启示,探究数学课堂教学中让学生得到思维锻炼的若干途径.1暗示过程,品味思想在解题教学中,教师通过适当的方式展示形成解题思路和实施解题的整个过程,学生就能够从中悟出数学解题的思维活动方式.     

高中物理解题的几种常用解题技巧

高中物理的解题一直是学生学习当中的难点.由此掌握好良好的物理解题方法十分必要.在实际的物理解题过程中,应遵循一定的解题规律,从而能达到事半功倍的效果.通过分析物理解题过程中的规律,明确了解题当中的关键和相应的解题要素,为学生物理的解题提供了指导,同时也为高中物理解题思路的梳理以及物理的教学提供了可供参考的经验.在高中的学习过程当中,物理的学习是其中一大难点.整个高中的物理学习当中,解题的思维在很大程度上决定了物理是否能学好的关键.由此在实际的解题过程中,应遵循一定的解题规律,注重解题的过程,明确解题的思维,通过掌握相应的解题规律以及基本的物理学习的基础,帮助学生理清学习以及解题的思路,从而能达到高效学习、快速准     

解题反思:数学解题中被遗忘的角落

解题反思是对整个解题活动深层次的思考,是再发现、再创造的过程。数学问题的解决后,还应该更深一步挖掘题目隐含的条件,命题的目的,所涉及的知识要点和数学思想方法,进一步探讨解题过程的思维方式是否正确、合理、严谨;解决问题的策略是否巧妙,有无其他解法;本题的解法和结论能否进一步推广。反思解题过程,可以培养学生思维的严谨性;反思解题结果,可以培养学生思维的合理性;反思解题方法,可以培养学生思维的创造性;反思"一题多解、一题多变、一解多题",可以培养学生思维的发散性。     

“过程分析图”在化学解题中的妙用

“过程分析图”是指利用化学变化过程中有关物质的变化、现象的变化以及量的变化等进行分析、归纳、整理，寻找解题思路和解题方法的一种图示。[编者按]     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.