共查询到20条相似文献，搜索用时 62 毫秒
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苏连塔 《湖南科技学院学报》2005,26(11):200-203
本文将统计图的理解能力水平分为四个层次：直接读取数据信息;两点间的比较和加工数据信息;三点或三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.在此基础上,通过对使用华东师范大学出版社出版的实验教材、人民教育出版社出版的教科书的两所学校七年级、八年级、九年级的共180名学生进行了问卷测试和访谈,了解了使用不同教材的学生对统计图理解能力的差异.通过调查,发现使用华师版的学生理解统计图的能力比使用人教版的学生高.本文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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孙桂瑾 《数学学习与研究(教研版)》2006,(10):10-11,35
利用统计图表描述数据是统计分析的重要环节．对收集到的数据进行整理．并用统计图表描述出来，可以使我们直观、形象地了解数据的分布特征和规律，帮助我们从图表中获得信息．得出结论，最终作出合理的决策．常用的统计图有条形统计图、折线统计图、扇形统计图．它们有各自的特点． 相似文献
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在当今信息化时代，数据已经成为一种重要的信息．而扇形统计图、条形统计图、折线统计图可以从不同的角度反映一组数据信息的特点与规律，三种统计图有着各自特点，因此解决实际问题时要注意统计图的特点，学会收集、描述、分析数据，从而作出合理的决策． 相似文献
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孟坤 《中学课程辅导(初二版)》2007,(8):18-19
用统计图把枯燥、抽象的数据描述出来，可使我们得到许多有用的信息．常见的统计图主要有：扇形统计图、条形统计图和折线统计图，在解题时要根据所要表达的不同问题的需要，依据统计图的特点，选择使用不同的统计图． 相似文献
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应用统计图表的目的是准确、直观地反映一组数据所蕴涵的信息，帮助人们迅速地解读数据．对于同一组数据，有的可以画出不同的统计图，但不是任何一种统计图都能准确而直观地反映数据所表达的信息．因此，要根据调查的目的和数据的特点选择统计图．还有，画图时如有疏忽，统计图会使人产生错觉从而导致误解． 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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统计类问题试题是历年来各地中考命题的热点．这类问题是指从图表中获取信息，并根据图表中的信息分析数据，作出合理的解释，主要考查学生的统计意识，因此在中考中备受命题者的青睐，统计类问题也就成为同学们喜闻乐见的一种题型．综合分析考查的内容，大致有数据表格、条形统计图、折线统计图、扇形统计图，以及它们之间的组合图形等．[第一段] 相似文献
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教学目标1．让学生在联系具体问题经历用条形统计图表达数据的过程中认识条形统计图,学会用条形统计图进行简单的统计,并能对统计的数据进行简单的分析。2．让学生通过对条形统计图表达数据的结果的观察分析,感受条形统计图的特征,认识条形统计图的作用,初步了解条形统计图的制作方法。 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 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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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 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