The Effect of a Computerized Simulation on Middle School Students’ Understanding of the Kinetic Molecular Theory     

Luli Stern  Nitza Barnea  Sofia Shauli 《Journal of Science Education and Technology》2008,17(4):305-315

The objective of this study was to evaluate the effect of a dynamic software simulation on the understanding of the kinetic molecular theory by 7th graders. Students in the control group (n = 62) studied a curricular unit that addressed the differences in arrangement and motion of molecules in the three phases of matter. The experimental group (n = 71) studied the same unit combined with a few computer lessons using a software simulation. The results indicate that the students in the experimental group scored significantly higher than those in the control group. Nonetheless, while both groups of students improved their understanding of the kinetic molecular theory, the overall achievements were very low. These findings suggest that the simulation improved the understanding of the 7th graders; however, it was insufficient in itself to promote meaningful learning. Statistically significant gender differences were not observed. This paper concludes with a discussion of the educational implications of this study.  相似文献   

大学英语教学中的语感培养策略探讨     

邢艳 《山西广播电视大学学报》2007,12(5):66-67

英语的语感是通过长期的训练与应用得来的,对于英语表达、判断、应用能力的提高有着重要的作用,是对英语语言的直接感知能力,也是对英语语言法则或语言组织方法的掌握和运用。本文从阐述大学英语教学中语感培养的重要性入手,强调了语言能力是通过语言运用获得的,进而提出了大学英语教学中语感培养的基本策略。  相似文献   

优质学校教师专业发展的价值取向、策略与反思   总被引：3，自引：1，他引：3  

李朝辉 《教育科学》2006,22(2):59-61

教师专业发展是优质学校建设基本维度之一。优质学校教师专业发展的价值取向关注教师的日常生活,使教师在日常生活情境中促进自己的发展。根据教师专业发展取向,我们提出了优质学校教师专业发展的基本策略,反思教师专业发展中的一些问题。  相似文献   

Beginning reading strategies in children experiencing contrasting teaching methods     

Paul Timothy Sowden  Jim Stevenson 《Reading and writing》1994,6(2):109-123

Two groups of 4.5–5.5 year old children in their first year at school were examined; one taught by a whole word teaching method and one taught by a mixed whole word and phonological teaching method. The children were given a test to investigate their reading of normal words. The results of this test were subjected to a detailed error analysis and the two groups were examined in order to see if there were differences in the reading strategies they used. No evidence was found counter to the assumption that reading begins with a logographic stage. However, it was found that teaching method was having a significant impact on the reading strategies which the children adopted. In addition it was found that a number of children from the whole school appeared to exhibit letter by letter reading. This suggests that letter by letter dyslexia might in part be an extreme form of a strategy used by normal readers.  相似文献   

随机波动率模型的最优投资问题     

牛保青  刘利敏  闫海峰 《安阳师范学院学报》2006,(5):1-4

研究了随机波动率模型的最优投资问题。通过对数变换将最优问题的HJB方程转化为半线性偏微分方程,证明了最优投资组合解的存在性,给出了价值函数和最优投资策略。  相似文献   

庐山旅游客源市场及开发策略   总被引：2，自引：0，他引：2  

郑丽娟 《临沂师范学院学报》2006,28(6):88-91

客源是决定旅游发展的重要力量,通过对庐山近几年客源市场状况的研究,利用亲身调查资料和相关部门的统计数据进行分析比较,发现庐山客源市场开发中存在的问题,并根据问题提出了相关的开发策略．  相似文献   

企业危机公关中媒介的作用及对策分析     

陈小波 《衡阳师范学院学报》2007,28(4):119-122

在企业危机公关中,媒介不仅可以监测危机具体的社会舆论环境和危机发生的潜在因素,作为企业与公众的中介,媒介还可以沟通信息、疏导舆论,在积极维护公众利益的同时,帮助企业成功地渡过难关,使其转"危"为安,甚至化"危"为"机"。  相似文献   

对语言学习策略与大学英语四级考试成绩关系的调查与研究     

王芳姿 《河北北方学院学报(社会科学版)》2008,24(3)

采用定量和定性分析的方法,通过问卷和访谈对嘉兴学院非英语专业部分学生运用英语学习策略的情况进行调查,分析了学习策略的运用与大学英语四级考试成绩之间的关系以及高分组学生与低分组学生在元认知策略和认知策略运用上存在的差异,并就调查中反映出的当前大学英语教学中的一些不足之处以及学习策略的教学和培养提出了对策和建议。  相似文献   

内容图式对ESL阅读及其策略使用的影响     

张晓莉 《洛阳师范学院学报》2007,26(3):134-136

文章运用定量方法研究了以图片形式提供给学生的内容图式对学生阅读理解的促进作用。研究结果表明:为受试提供图片提示后,他们能够主动应用预测、联系先前知识等阅读策略,从而弥补了二语阅读的语言障碍,较好的理解了高于他们英语水平的文章。因此图式提示对学生的阅读理解具有良好的促进作用,并且可以有效引导学生阅读策略的使用。  相似文献   

残疾人事业的伦理学辩护及其限制   总被引：6，自引：0，他引：6  

颜青山 《湖南师范大学社会科学学报》2001,30(5):10-14

10年来，我国残疾人事业在各个方面（就业、教育、社会交往、公共设施和康复等）都取得了今世界瞩目的成就。残疾人事业可以得到各种一般原则的辩护，但也还具有不充分性，因此，我们将一般原则降解为实际境况之具体策略，但在具体实践中，残疾人事业仍存在种种限制。  相似文献