共查询到20条相似文献，搜索用时 421 毫秒
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苏连塔 《合肥联合大学学报》2006,16(1):86-90
统计图的理解能力水平应分为4个层次：直接读取数据信息；两点间的比较和加工数据信息；3点或3点以上的局部比较和加工数据信息；全面分析数据信息而形成假设，看出趋势．通过调查，了解到不同年级的学生对统计图理解能力的差异，发现学生随着年龄的增长理解统计图的能力水平在增加．最后对教师和课程开发者提出了一些相关的具体建议． 相似文献
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教学内容：人教版课改实验教材四年级下册第108页《折线统计图》
教材分析：折线统计图是在学生学习了条形统计图的基础上进行教学的,由于折线统计图和条形统计图比较相似,只是不画直条,而是按照数据的大小描出各点,再用线段顺次连接起来,突出反应数量的变化趋势。为了突出这一特征,让学生通过手势画一画,动手描一描,联系各种生活材料体验数量的变化趋势, 相似文献
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教学内容:人教版课改实验教材四年级下册第108页<折线统计图> 教材分析: 折线统计图是在学生学习了条形统计图的基础上进行教学的,由于折线统计图和条形统计图比较相似,只是不画直条,而是按照数据的大小描出各点,再用线段顺次连接起来,突出反应数量的变化趋势.为了突出这一特征,让学生通过手势画一画,动手描一描,联系各种生活材料体验数量的变化趋势,让学生感悟折线统计图的特征.新课标对<折线统计图>除了关注原有的这些基础性目标外,更关注学生学习过程的发展性目标:即更注重激发学生的内在潜能,着眼于为学生终身发展服务. 相似文献
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一、教材分析
学生在三年级下册和四年级上册分别学习过1格表示1个和多个单位的条形统计图,对于统计图的结构、特征及如何读图已经有了相当的认识基础。认识折线统计图是统计图学习的一次延伸,也是统计图功能的一次拓展。教学目标：在具体的统计活动中认识简单的折线统计图,了解折线统计图的结构,体会折线统计图的特点,用简单的折线统计图表示数据;初步学会根据实际问题,选择条形统计图或折线统计图直观地表示相应的数据,并能对统计图进行简单的分析; 相似文献
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使用人教版课标实验教材六年级的同学们,本学期学习的“高形统计图”是在同学们学习了条形统计图和折线统计图的基础上进行的。学习时要注意以下两点： 相似文献
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教学内容苏教版五年级下册74～75页的例题和练习十三教学要求1.使学生经历用复式折线统计图描述数据的过程,了解复式折线统计图的特点和作用,能看懂复式折线统计图所表示的信息,能根据要求完成复式折线统计图。2.使学生能根据复式折线统计图中的信息,进行简单的分析、比较和判断推理,进一步增强统计观念, 相似文献
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一、教材分析
学生在第一学段已经学习了简单的统计图表,四年级又学习了简单的条形统计图、折线统计图,本单元在此基础上学习扇形统计图和统计图的选择等。到六年级学生将进一步认识复式统计图。为了使学生在看懂统计图表、分析数据的过程中体会统计的必要性,发展学生的统计观念,《扇形统计图》的学习重点应放在会看图、分析统计图表中的数据上,而不是放在制作统计图上。 相似文献
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一、教材分析
《简单的数据分析》是人教版三年级下册“统计“的第1课时。学生已经学会了收集和整理数据的方法,会用统计表和纵向条形统计图表示统计的结果,并能根据统计图表提出问题、解决问题。本课通过2个例题继续介绍常见的条形统计图：一种是横向条形统计图,另一种是起始格与其他格表示不同量的条形统计图。 相似文献
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<正>【教学内容】人教版小学数学教材五年级下册第104～105页。【教学目标】1.认识折线统计图，掌握绘制折线统计图的方法。了解折线统计图的特点，能对统计的数据进行合理解释，并能根据数据信息做出简单的判断和预测。2.经历探究折线统计图的过程，感受从具体到一般的数学思想方法。3.感受折线统计图在生活中的应用和价值，发展数据分析观念。【教学重点】认识折线统计图，了解折线统计图的特点。 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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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
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The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies. 相似文献
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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. 相似文献