The Effects of a Student Sampling Plan on Estimates of the Standard Errors for Student Passing Rates

Examined in this study were three procedures for estimating the standard errors of school passing rates using a generalizability theory model. Also examined was how these procedures behaved for student samples that differed in size. The procedures differed in terms of their assumptions about the populations from which students were sampled, and it was found that student sample size generally had a notable effect on the size of the standard error estimates they produced. Also the three procedures produced markedly different standard error estimates when student sample size was small.     

背景·内涵·外延--论阅读理解中的要素把握

背景、内涵、外延是正确阅读，理解的三个关键性要素，背景影响写作素材的获得和作品的思想情感，同时，背景又具有偶然性和双向性特点，间接内涵是作品巨大魅力之所在，它具有单一和复合两种形式，把握外延的尺度是正确理解作品现实意义和历史意义的关键。     

大学生健康性心理探索

通过分析大学生性心理的基本特征及健全的性心理结构，帮助大学生树立正确的性观念，形成科学的性意识。     

词汇教学中的联想归纳

教师在词汇教学中运用联想归纳的方法，不仅有助于学生快捷地掌握大量的词汇，而且能激发学生的学习兴趣。本作介绍了在教学中经常用到的几种方法，供大家参考。     

The Development of Everyday Mathematics in Brazilian Children with Limited Formal Education

The sociocultural context in which children acquire and use everyday mathematics was studied in Brazilian shantytown communities. Children's developing mathematical abilities and use of currency in solving commercial problems were investigated. Interviews with the parents of 105 children from 4 to 14 years of age indicated that, when sent to make purchases at local stands, the problems entailed in the responsibilities parents assigned to children involved greater arithmetical complexity with increasing age. Children's accuracy and strategy use on arithmetic tasks similar to the problems encountered in commercial transactions revealed: ( a ) many children used currency to aid their problem solving; ( b ) with increasing age, currency use declined; and ( c ) children's currency use progressed from global estimates to the mental decomposition and manipulation of currency values. The mathematical complexity of children's commercial transactions correlated significantly with their mathematics performance even when age, grade in school, and years of schooling were statistically controlled The results provide evidence that by adjusting the mathematical complexity of children's commercial transactions, parents facilitate connections between children's developing competence and their everyday activities.     

新自由主义时期的世界经济

新自由主义政策在世界范围的泛滥打击了工人阶级的政治和经济理论,破坏了社会主义国家和许多第三世界国家发展民族经济的努力,一定程度上改变了世界范围利润率下降的趋势。它给世界人民带来了深重的灾难,并加剧了世界资本主义体系内部的各种矛盾,使其结构性危机越来越严重。     

关于实矩阵值对数函数(Ⅲ)

本续文的工作是确定GL(n,R)和gl(n,R)的最大连通区域W(n,R)和w(n,R)(见正文).主要结果为:定理 限制在w(n,R)和W(n,R)上,指数映射exp:w(n,R)→W(n,R),或者,对数映射ln:W(n,R)→w(n,R)是微分同胚(定理8).     

家长会初探

在升学和“提高”教学质量的压力下，家长会原有的功能已经丧失，正在“变味”。为了使家长会起到班主任、任课教师和家长交流，探讨教育孩子方法的“舞台”的作用，笔者认为：①做好规划追求实效；②分批召开家长会；③让家长感知孩子的优点与不足，让家长成为家长会的主角。