Elementary school children’s understanding of science: The implementation of an extracurricular science intervention     

《Contemporary educational psychology》2017

The promotion of students’ achievement and competence in the so-called STEM disciplines is one cornerstone of current educational research and practice. In particular, as early as elementary school, the fostering of an adequate understanding of science is a normative goal of science education. It facilitates students’ science learning and enables them to understand the nature and development of scientific knowledge. Based on the relevance of the promotion of young children’s understanding of science, a corresponding science intervention was recently developed and successfully evaluated in a first study under highly controlled conditions. The goal of the present study was to investigate the effectiveness of this intervention when implemented in practice. One hundred seventeen third- and fourth-grade students and 10 trained course instructors participated in this study. We applied a randomized block design with waitlist control groups and repeated measures. The results revealed that children assigned to the intervention compared with children assigned to the waitlist control group showed better inquiry-related methodological competencies (a better understanding of the scientific inquiry cycle and experimentation strategies) and a higher need for cognition. The findings point to the successful implementation of the intervention and are compared with the results of the first study.  相似文献   

Improving cognitive and physical function through 12-weeks of resistance training in older adults: Randomized controlled trial     

Paulo Ricardo Pereira Dos Santos  Bruno Remígio Cavalcante  Andreya Karolyne Dos Santos Vieira  Marcos Duarte Guimarães  Antônio Marconi Leandro Da Silva  Anderson Da Costa Armstrong 《Journal of sports sciences》2020,38(17):1936-1942

ABSTRACT

We performed a randomized, controlled trial to analyse the effects of resistance training (RT) on cognitive and physical function among older adults. Fifty participants (mean age 67 years, ~60% woman) were randomly assigned to an RT program or a control group. Participants allocated to RT performed three sets of 10-15RM in nine exercises, three times per week, for 12-weeks. Control group did not perform any exercise. Variables included cognitive (global and executive function) and physical function (gait, mobility and strength) outcomes. At completion of the intervention, RT was shown to have significantly mitigated the drop in selective attention and conflict resolution performance (Stroop test: -494.6; 95%CI: -883.1; ?106.1) and promoted a significant improvement in working memory (digit span forward: -0.6; 95%CI: ?1.0; ?0.1 and forward minus backward: -0.9; 95% CI: ?1.6; ?0.2) and verbal fluency (animal naming: +1.4, 95%CI 0.3, 2.5). No significant between-group differences were observed for other cognitive outcomes. Regarding physical function, at completion of the intervention, the RT group demonstrated improved fast-pace gait performance (?0.3; 95% CI: ?0.6; ?0.0) and 1-RM (+21.4 kg; 95%CI: 16.6; 26.2). No significant between-group differences were observed for other mobility-related outcomes. In conclusion, RT improves cognitive and physical function of older adults.  相似文献   

Word2000在数学文(图)档编辑中的应用     

王华东 《周口师范学院学报》2002,19(2):79-80

介绍了用Word2 0 0 0编辑数学公式与制作几何图形的方法  相似文献   

运用念动练习法提高太极拳教学效果的实验研究     

丁勇春 《宁德师专学报(自然科学版)》2006,18(2):159-161

根据“念动练习法”的基本理论,突破武术教学只注重灌输式传授基本技术、技能忽略学生主观能动性培养的模式．通过教学实验证明,运用“念动练习法”教学策略可以提高学生的学习兴趣,增强学习的动机,从而提高高校太极拳选项课教学质量．  相似文献   

工程电流源综述     

李舒晨 《渭南师范学院学报》2001,16(2):3-7

在信号变换及电子测量中，电流源应用广泛，其性能优劣及结构特点对测量结果有直接影响。因此，在电子测量控制工程设计中应正确选用电流源电路结构及参数。  相似文献   

女大学生如何增强自我防护意识     

高燕梅 《渭南师范学院学报》2003,18(5):93-95

文章首先论述了提出这个论题的必要性，接着从了解掌握一定的科学的性知识、树立健康的符合时代进步的性观念、在恋爱交友中用理智调控感情等三个方面重点具体地论证了论题。  相似文献   

混合药膜包膜系统释放动力学研究     

石巍  张国亮  张凤宝  刘瑛 《天津大学学报(英文版)》2001,7(1):56-60

存储混合型是目前研究较多的控制释放体系 ,但由于其机理较为复杂 ,目前尚未建立合理实用的动力学模型 .以混合药膜包膜体系为研究对象 ,建立了释放动力学的简化模型并获得了解析解 .实验数据表明 ,该模型适用于描述药物装填量大于饱和溶解度的药物释放动力学行为 (相对偏差小于 3 % ) .根据该模型还从理论上分析了两种限定条件 (Dm Df和 Dm Df)下药物的释放特征 :当 Dm Df时 ,释放速率变为常数 ,达到零级释放 ,其释放速率与药膜无关 ,这为零级释放缓释体系如何控制释放速率和药物释放量提供了理论依据 :当 Dm Df时 ,药物的释放速率与药膜中的释放系数、溶解度和药物的装填量有关 ,与包膜过程无关 ,其释放过程类似于混合药膜缓释体系  相似文献   

如何在实践中培养和提高科技英语翻译水平     

郝芳 《海外英语》2011,(2):104-106

当今世界科学技术迅猛发展,各国之间的技术交流和合作也愈加密切。因此,科技英语的重要作用也日益显现出来。而科技英语的技术专业性很强,这一特点决定了英语专业毕业生从事某一行业技术翻译工作的难度。怎样培和提高科技英语的翻译水平,是广大英语学习者和业内人士一直都非常关注和热心探讨的话题。通过在实际工作中了解行业技术的基本概念和原理,学习、掌握和积累一定的行业技术词汇,选配适合的科技英语词典,同时结合科技英语语法的相关知识,将十分有助于培养和提高科技英语的翻译水平。  相似文献   

小说中称谓语的语境顺应研究——以《一个女人的史诗》为例     

黄倩  张发祥 《洛阳师范学院学报》2011,30(3):95-97

称谓是人类社会语言文化的一种普遍现象,往往反映特定语言环境中人与人之间的关系。小说中的称谓语顺应社交世界、心理世界和物理世界等不同的语境因素,体现场合的正式程度,时空的转换,说话者的情感和性格等。对小说中称谓语的研究有助于文学作品的鉴赏和创造。  相似文献   

文化视角下的汉语称谓英译浅析     

黄新英 《海外英语》2011,(10):194-195

称谓是每一种语言共有的现象,更是一种文化现象,体现了了人类语言的共有特征。汉英称谓既有其文化共享的一面,也有其各自的特点和语言习惯,它们之间存在着巨大的差异。汉语称谓的英译与文化关系密切。该文首先阐释文化与语言的关系和翻译与文化的关系,其次从汉语称谓与英语称谓所体现的文化异同研究汉语称谓英译方法,即模仿、阐述和替代。  相似文献