共查询到20条相似文献，搜索用时 250 毫秒
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近年来,特别是新课程实施后,开放性试题已成为各地高考试卷中的一大亮点．下面笔者就对化学开放性试题作个初步的探讨． 相似文献
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2010年全国各地高考化学开放性试题统计与分析 总被引：1，自引：0，他引：1
纵观几年来的高考试题,全国高考理科综合试题中都增加了开放性试题,这是高考实行改革的具体体现。开放性试题更能有效地考查学生的发散思维能力,本文对2010年全国各地高考化学科考试中的开放性试题进行了统计、分析。 相似文献
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李万春 《数理化学习(高中版)》2003,(20)
纵观几年来的高考试题,全国高考理科综合试题中都增加了开放性试题,这是高考实行改革的具体体现.开放性试题具有条件的不完备性、结论的不确定性、过程的探究性、知识的综合性和思维的不约束性等特点,考生必须从多角度多层次运用多种模式去解决问题.开放性试题更能有效地考查学生的发散思维能力,因此,高考已经高度重视和密切关注开放性试题,使之逐渐成为化学实验命题的新动向.分析开放性实验题的命题倾向,大体可以归纳为以下三个方面. 相似文献
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近几年来，特别是新课程实施之后，开放性试题已成为各地高考试卷中的一大亮点。下面笔者就化学开放性试题备考教学策略作一初步探讨。 相似文献
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开放性化学试题具有条件的不完备性、结论的不确定性、内涵的可发展性、思维的不约束性等特点。在解题过程中强调答案的多样化 ,提倡学生从多个角度、多个层次回答问题 ,有利于培养学生的创造性思维。教育部考试中心在高考题型功能和题型改革的研究中 ,已高度重视和关注开放性试题 ;在近年的各类化学竞赛试题和高考化学试题中已或多或少地渗透了一些开放性试题或其雏形。这些都说明引入开放性试题已成为化学教学和考试改革的一种研究和探索的方向。实验是化学的基础 ,也是化学考试中的一种重要题型。在实验复习时设计一些开放性的问题无疑将… 相似文献
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陈明清 《中国教育技术装备》2011,(31):162-163
开放性试题全方位考查学生的各种能力,是一类符合新课程理念的好题,所以高考中此类试题频频出现。提出条件开放型的开放性试题的设计方法:把常规的化学试题中的条件略作改动,使其条件过剩,或者条件缺乏,就可形成较好的化学开放性试题。 相似文献
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WANG Houxiong 《中国考试》2008,(6)
新课程标准下高考内容的改革是高考改革的重点和难点。本文阐述了新课程高考化学试题设计的新思路:重视试题的真实性与情境性;联系生活、社会和科学发展,体现实践性;加强对科学思维方法的考查;改进信息迁移题,考查学生学科素质;增加高考实验设计型试题;探索化学探究性和开放性试题;提高选做题"等值"的编制技术;对试题内容进行人性化处理等。要从新课程评价的高度认识试题内容和题型设计的发展与创新。 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(5):10-11
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? 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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《海外英语》2007,(4):36
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. 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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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. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献