Coordinating multiple representations of polynomials: What do patterns in students' solution strategies reveal?

We investigate the strategies used by 64 advanced secondary mathematics students to identify whether a given pair of polynomial representations (graphs, tables, or equations) corresponded to the same function on an assessment of coordinating representations. Participants also completed assessments of domain-related knowledge and background skills. Cluster analysis of strategies by representation pair revealed patterns in the participants' strategy use. Two clusters were identifiable on tasks that required matching equations to graphs and graphs to tables. We identified overlap between these two clusters, suggesting that while the representation pair influenced strategy choice, there was also a general distinction between students who used more and less sophisticated strategies. However, students who used more sophisticated coordination strategies were similar to the others on measures of domain-specific knowledge or background skills. We consider implications for future investigations testing interventions to promote coordinating representations.     

女大学生瑜伽练习中呼吸运用的现状与分析

在高校体育选修课程中,瑜伽通过调吸调身调心,达到身心灵合一的境界,受到众多女大学生的欢迎和喜爱,而在教学过程中,学生普遍存在一些有关呼吸方面的困惑。针对这一问题的现状进行简单分析,提出解决方案,希望对以后的教学工作有一定的指导意义。     

关于城乡结合部中小学生心理困境现状的调查分析——以河南省周口市为例

城乡结合部中小学生面临的心理困境有日趋增多的趋势。困境产生的原因主要来自社会、学校、家庭和学生个人四个方面。只有采取强化心理健康教育工作、提高教师心理健康教育能力、构建心理健康教育体系等对策,才能使中小学生走出心理困境,实现全面发展。     

Formative Assessment: A Meta‐Analysis and a Call for Research

An effect size of about .70 (or .40–.70) is often claimed for the efficacy of formative assessment, but is not supported by the existing research base. More than 300 studies that appeared to address the efficacy of formative assessment in grades K‐12 were reviewed. Many of the studies had severely flawed research designs yielding uninterpretable results. Only 13 of the studies provided sufficient information to calculate relevant effect sizes. A total of 42 independent effect sizes were available. The median observed effect size was .25. Using a random effects model, a weighted mean effect size of .20 was calculated. Moderator analyses suggested that formative assessment might be more effective in English language arts (ELA) than in mathematics or science, with estimated effect sizes of .32, .17, and .09, respectively. Two types of implementation of formative assessment, one based on professional development and the other on the use of computer‐based formative systems, appeared to be more effective than other approaches, yielding mean effect size of .30 and .28, respectively. Given the wide use and potential efficacy of good formative assessment practices, the paucity of the current research base is problematic. A call for more high‐quality studies is issued.     

竞技武术套路运动员力量素质的训练措施分析

在现代竞技武术比赛中,超强的力量素质对创造优异的运动成绩起着重要作用。本文通过文献资料法、逻辑分析法等方法,针对竞技武术套路的运动特点指导和制定科学合理的力量素质训练方法,旨在使竞技武术套路训练走向更加科学化和规范化的道路,以期促进我国武术事业的发展。     

基础教育英语语法教学价值分析

结合西方应用语言学和语言习得研究的进展,分析中国英语语法教学的现状,我们可以发现国内对语法教学价值判断的失当源于极性思维、盲从心理和实践精神的缺位;语法教学的必要性受多种复杂变量影响而处于一种分层次的连续状态,因此不是教与不教的问题而是更适合谁的问题;立足实践第一的原则才能客观看待语法教学的价值。     

当代大学生思想问题的解决策略——“思想分析”在辅导员工作中的应用

大学生心理问题和思想问题既相互区别又相互联系,高校辅导员对于两类性质各异的问题要采用不同的策略。大学生思想问题的分析和疏导可以采用“思想分析”的方法,思想分析继承和发展了马克思主义分析问题的思想方法,分析的过程也是开解思想“症结”的过程,“解惑、去苦”中运用的方法和技术有“宁静法”“四阶段法”“认知颖悟法”等。     

A Critical Metaphor Analysis of Political News Discourse-A Case Study of News Report about Iraq

Critical Metaphor Analysis is a new method of critical discourse analysis. It aims at revealing attitudes, believes, emo?tions and ideologies of a specific group by comprehensively adopting the knowled...     

“Enactment of Sámi Past in School Textbooks: Towards Multiple Pasts for Future Making”

The article examines the use of archaeological knowledge in elementary history textbooks used in Norwegian schools today. The aim is to determine whether we can find any traces of colonialism by reviewing how these narratives perform in interrelations within and between the Sámi and Norse pasts, and how the narratives allow for hybridity and heterogeneity. Postcolonial theory turns the narrative into an object of analysis. The findings show that the Sámi material remains are outside the system of cultural change and that the temporal and spatial distances produce binary and homogeneous cultures. New material perspectives can intervene in singular performativity. Learning to enact dynamic material heterogeneity may affect the future of pupils’ participation in cultural negotiations of pastsin present.     

近代与当代小报话语之转变——以兰州市小报为例

晚清民国时期，中国的小报繁盛。小报不论是在发行量上，还是对整个社会的影响力方面都起到了当时大报不可取代的作用，而当下小报不仅种类繁多，而且在发行、销量、社会影响方面也越发呈现出不俗的表现。在这两个阶段中，小报为什么能够在强势大报中争得自己的一席空间，原因在于小报在整个报业产业中，以其独特的发声方式，有别于主流大报的话语...