高等几何课程中的数学思想

结合高等几何的教学实践 ,探讨了高等几何课程中的基本数学思想 .     

“初等几何研究”课程改革与实践

随着数学教育的深入发展，高师数学教育课程的势在必行。“初等几何研究”课程的教学大纲需要重新制订，其课程体系和教学内容也需要大幅度调整，特别是将原来的“初等几何研究”课程和“高等几何”课程合并成为一门课程，并将该课程的教学目的从初等几何“研究”转到初等几何教学素质的培养上来。与此同时，编写中的教材《初等几何教学基础》也必须突出与数学教育改革思路相适应的特色。     

基于建构主义理论的高等几何教学研究

分析高等几何课程的重要性及教学中存在的问题,运用建构主义学习理论,讨论高等几何课程的知识、思想方法建构、研究教学方法、教学手段在建构过程中的实际运用,并以典型案例介绍如何以学生为中心进行积极高效的高等几何建构教学。     

基于初等几何的高等几何的教学研究

高等几何课程是高等师范院校数学专业学生的必修课之一,长期以来学生总认为它对中学的几何教学没有任何帮助。本文从几个方面探讨了高等几何对初等几何学习的指导作用。     

《高等几何》课程教学的一点体会

本丈通过自己辅导、讲授《高等几何》课的教学实践,从论述《高等几何》(主要是“射影几何”)课程中包含的一些基本的数学思想及其在教学中的运用入手,对如何把握这门课程的主要内容、重点和难点,以利于取得较好的教学效果,提高教学质量谈了一点粗浅的认识和体会。     

高等代数与解析几何的教学实践与认识

几何为代数提供直观背景,代数为几何提供研究方法,文章论述了高等代数与解析几何课程一体化教学过程中的若干教学实践与认识。     

关于选择《高等几何》课程内容的看法

近几年来,全国师范大专院校,相继恢复了《高等几何》课程。其理由不外乎是:第一,扩充几何知识,为后继课和科学研究打基础;第二,《高等几何》的某些内容与中学几何教学联系密切,对高师学生毕业后进行中学几何教学有一定的指导意义。《高等几何》究竟包含哪些内容?其说不一。但比较集中的有两种看法:一是认为主要包含《几何基础》与《射影几     

高师数学专业开设高等几何课程的再思考

高等几何课是高等师范院校数学专业的一门重要的基础课.在数学教育专业的课程设置改革中将高等几何变成选修课甚至取消的做法对师范教育都是十分不利的.只要中学几何课不取消,高等师范院校数学专业就应该把高等几何课设置为必修课,这是由高等几何课自身的特点和其与初等几何知识之间联系的密切程度决定的,高等几何在中学几何教学中具有不可替代的指导作用.     

高等几何在初等几何中的作用

高等几何是初等几何的延深课程.高等几何为初等几何的有关内容提供了理论依据,高等几何为初 等几何的某些问题提供了解题方法,高等几何可把初等几何的某些内容拓广与延深.     

高等几何课教学改革的尝试

《高等几何》是高等师范院校数学教育专业基础课之一,是以射影几何为主,以仿射几何为辅的课程。在变换群观点的指导下,欧氏几何、仿射几何,都是作为高等几何的子几何研究的。所以,学习（高等几何）能够加深对中学几何的理论和方法的认识,用高观点去指导中学几何的教学。由于目前通用教材与50年代从前苏联引进的教材没有太大变化,因此,在教学过程中存在着“难学难教”等现象。为此,许多教学工作者对高儿教材、教法的改革展开了热烈的讨论。有人认为：现有教材存在“深井式”问题,高等几何中许多思想、观点的引入与学生掌握的知识不…     

Western and Eastern culture differences in commercial field

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.     

风的曲线

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.     

团图为数的图中的闭团贯数

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.     

汉字倒说

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。     

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?     

Social and Cultural Influence on Word Meaning

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.     

钱生钱!

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     

Inequalities for inscribed simplexes

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.