Dynamic processes of conceptual change: Analysis of constructing mental models of chemical equilibrium     

Mei‐Hung Chiu  Chin‐Cheng Chou  Chia‐Ju Liu 《科学教学研究杂志》2002,39(8):688-712

The purpose of this study was to investigate students' mental models of chemical equilibrium using dynamic science assessments. Research in chemical education has shown that students at various levels have misconceptions about chemical equilibrium. According to Chi's theory of conceptual change, the concept of chemical equilibrium has constraint‐based features (e.g., random, simultaneous, uniform activities) that might prevent students from deeply understanding the nature of the concept of chemical equilibrium. In this study, we examined how students learned and constructed their mental models of chemical equilibrium in a cognitive apprenticeship context. Thirty 10th‐grade students participated in the study: 10 in a control group and 20 in a treatment group. Both groups were presented with a series of hands‐on chemical experiments. The students in the treatment group were instructed based on the main features of cognitive apprenticeship (CA), such as coaching, modeling, scaffolding, articulation, reflection, and exploration. However, the students in the control group (non‐CA group) learned from the tutor without explicit CA support. The results revealed that the CA group significantly outperformed the non‐CA group. The students in the CA group were capable of constructing the mental models of chemical equilibrium—including dynamic, random activities of molecules and interactions between molecules in the microworld—whereas the students in the non‐CA group failed to construct similar correct mental models of chemical equilibrium. The study focuses on the process of constructing mental models, on dynamic changes, and on the actions of students (such as self‐monitoring/self‐correction) who are learning the concept of chemical equilibrium. Also, we discuss the implications for science education. © 2002 Wiley Periodicals, Inc. J Res Sci Teach 39: 688–712, 2002  相似文献   

关于社会公平问题的思考     

仇书耘 《辽宁师专学报(社会科学版)》2006,(3):4-4,9

本文认为社会公平是反映和评价人们之间合理的社会利益关系的范畴。是一个历史范畴。在当下社会转型时期。我国存在社会不公平的问题，造成这一问题的原因后果是多方面的。推进社会公平的关键问题是树立正确的社会公平观，统筹协调好公平和效率的关系。坚持先富带后富最后达到共同富裕的原则。  相似文献   

Connecting digital elements with physical learning contexts: an educational escape-the-room game for supporting learning in young children     

Pao-Nan Chou  Chi-Cheng Chang  Shih-Wan Hsieh 《Technology, Pedagogy and Education》2020,29(4):425-444

ABSTRACT

The purpose of the current study was to investigate students’ overall learning process during the implementation of educational escape-the-room games (EERGs) in classrooms. This study adopted a two-stage case-study methodology, namely single-case and multi-case designs. In the first stage, a well-designed EERG for a Chinese language class was developed on a web-based game platform. A total of 15 second-grade students from a public elementary school in Taiwan used tablet computers to engage in problem-solving tasks in the EERG. In the second stage, five schoolteachers from other elementary schools who had adopted similar EERGs in their classrooms in the previous academic year participated in the study to share their instructional experiences. The results indicated that students actively collaborated with their team members to address problem-solving tasks during the EERG activity. Positive collaborative learning experiences and learning attitudes towards the EERG were identified in the students’ self-reflection worksheets.  相似文献   

Asymmetries in progression in higher education in Taiwan: Parental education and income effects   总被引：1，自引：0，他引：1  

Jin-Tan Liu  Shin-Yi Chou  Jin-Long Liu 《Economics of Education Review》2006,25(6):647-658

A unique data set on Taiwan was employed to investigate the socioeconomic family backgrounds of students attending universities. Our empirical study found that individuals attending university are more likely to come from better-educated families than are those who do not attend university. Students attending public universities, which receive higher government subsidies, tend to come from wealthier families. Furthermore, our results show that the relationship between the size of the government subsidies and family background is not purely progressive. Students attending normal universities/teacher training colleges received the highest subsidies but tended to come from the least-educated families. Students attending the top five public universities come from the most affluent families of Taiwanese society.  相似文献   

利用EPR图测定物质结构     

蓝庭钊  丑华 《内江师范学院学报》2001,16(4):19-22

根据EPR原理，分析MnSo4及K3[Cr(CN)5NO]H2O等溶液EPR谱图，确定有关物质结构。  相似文献   

社交网络舆情意见领袖研究:蝴蝶图示、甄别及影响力评价     

郭勇  高歌  王天勇  Harris Wu  周世玉 《图书情报工作》2019,63(14):62-73

[目的/意义]社交媒体环境下意见领袖与受众社群间形成了自运转、自循环的范围舆情系统，有效甄别意见领袖并评价其影响力对加强网络舆情管控具有实践意义。[方法/过程]结合OCA扩展理论、群际关系理论、舆情场势理论以及SIC理论，通过系统动力学分析意见领袖作用、前因变量及其动因机制，构建意见领袖影响力评价体系的一般性框架，提出一种变权重灰色关联度的意见领袖甄别算法，并以舆情话题"11·3留日女生遇害案"进行实证研究。[结果/结论]"蝴蝶图示"架构了意见领袖作用与前因变量的因果关系及反馈回路，揭示了舆情系统内社群生态与意见领袖作用协同演化的内在机理；本文提出的理论模型具有多维度测度、权重集科学、算法性能优越等特点，适用于社交网络中意见领袖形成的动态过程。  相似文献   

Comparison of Taiwanese and Canadian Students' Metacognitive Awareness of Science Reading,Text, and Strategies     

Jing-Ru Wang  Shin-Feng Chen  I. Fang  Ching-Ting Chou 《International Journal of Science Education》2013,35(4):693-713

This study used a Chinese-language version of the Index of Science Reading Awareness to explore the science reading metacognition and comprehension of Taiwanese students. Structural equation modelling results confirmed the underlying model comprised three clusters of metacognitive knowledge: beliefs and confidence in science reading, knowledge of structure of science text, and knowledge of science reading strategies. The main contribution of the current research was to provide evidence about the relationship between metacognitive awareness and comprehension of science text. In addition, data comparisons to Canadian (British Columbia) benchmarks from the original development revealed that metacognitive awareness of science reading deteriorated from elementary to middle school in both countries, and there were no significant differences of metacognitive awareness of science reading between Canadian and Taiwanese students. Instructional suggestions for raising students' metacognitive awareness on science reading were discussed.  相似文献   

Developing Sixth Graders’ Inquiry Skills to Construct Explanations in Inquiry‐based Learning Environments     

Hsin‐Kai Wu  Chou‐En Hsieh 《International Journal of Science Education》2013,35(11):1289-1313

The purpose of this study is to investigate how sixth graders develop inquiry skills to construct explanations in an inquiry‐based learning environment. We designed a series of inquiry‐based learning activities and identified four inquiry skills that are relevant to students’ construction of explanation. These skills include skills to identify causal relationships, to describe the reasoning process, to use data as evidence, and to evaluate explanations. Multiple sources of data (e.g., video recordings of learning activities, interviews, students’ artifacts, and pre/post tests) were collected from two science classes with 58 sixth graders. The statistical results show that overall the students’ inquiry skills were significantly improved after they participated in the series of the learning activities. Yet the level of competency in these skills varied. While students made significant progress in identifying causal relationships, describing the reasoning process, and using data as evidence, they showed slight improvement in evaluating explanations. Additionally, the analyses suggest that phases of inquiry provide different kinds of learning opportunities and interact with students’ development of inquiry skills.  相似文献   

Improving mathematics teaching and learning experiences for hard of hearing students with wireless technology-enhanced classrooms     

Liu CC  Chou CC  Liu BJ  Yang JW 《American annals of the deaf》2006,151(3):345-355

Hard of hearing students usually face more difficulties at school than other students. A classroom environment with wireless technology was implemented to explore whether wireless technology could enhance mathematics learning and teaching activities for a hearing teacher and her 7 hard of hearing students in a Taiwan junior high school. Experiments showed that the highly interactive communication through the wireless network increased student participation in learning activities. Students demonstrated more responses to the teacher and fewer distraction behaviors. Fewer mistakes were made in in-class course work because Tablet PCs provided students scaffolds. Students stated that the environment with wireless technology was desirable and said that they hoped to continue using the environment to learn mathematics.  相似文献   

对《电子文件归档与管理规范》进行修订的几点建议   总被引：2，自引：0，他引：2  

仇壮丽  唐思慧  王协舟 《档案管理》2007,(6):41-42

《电子文件归档与管理规范》(以下简称《规范》)作为我国指导电子文件归档与管理的第一个标准,对提高我国电子文件管理水平起了很大的作用.但《规范》出台的时间较早,有些地方不是很成熟;而且随着实践的发展,有些内容需要进行修订,以适应新形势的需要.  相似文献