A sociocultural perspective on mediated activity in third grade science

This ethnographic study of a third grade classroom examined elementary school science learning as a sociocultural accomplishment. The research focused on how a teacher helped his students acquire psychological tools for learning to think and engage in scientific practices as locally defined. Analyses of classroom discourse examined both how the teacher used mediational strategies to frame disciplinary knowledge in science as well as how students internalized and appropriated ways of knowing in science. The study documented and analyzed how students came to appropriate scientific knowledge as their own in an ongoing manner tied to their identities as student scientists. Implications for sociocultural theory in science education research are discussed. John Reveles is an assistant professor in the Elementary Education Department at California State University, Northridge. He received his Ph.D. from the University of California, Santa Barbara in 2005. Before pursuing his Ph.D., he worked as a bilingual elementary school teacher for 3 years. His research focuses on the development of scientific literacy in elementary school settings; sociocultural influences on students' academic identity; equity of access issues in science education; qualitative and quantitative research methods. Within the Michael D. Eisner College of Education, he teaches elementary science curriculum methods courses, graduate science education seminars, and graduate research courses. Gregory Kelly is a professor of science education at Penn State University. He is a former Peace Corps Volunteer and physics teacher. He received his Ph.D. from Cornell in 1994. His research focuses on classroom discourse, epistemology, and science learning. This work has been supported by grants from Spencer Foundation, National Science Foundation, and the National Academy of Education. He teaches courses concerning the uses of history, philosophy, sociology of science in science teaching and teaching and learning science in secondary schools. He is editor of the journal Science Education. Richard Durán is a Professor in the Gevirtz Graduate School of Education, University of California, Santa Barbara. His research and publications have been in the areas of literacy and assessment of English Language Learners and Latino students. He has also conducted research on after school computer clubs, technology and learning as part of the international UC Links Network. With support from the Kellogg Foundation, he is implementing and investigating community and family-centered intervention programs serving the educational progress of Latino students in the middle and high school grades.     

基于WEB平台网络教学系统设计初探

章介绍基于WEB平台的网络教学系统的设计原则、系统的功能分析，就如何提高系统的实用性、交互性和启发性，作了初步的探讨。     

Early Mathematical Growth: How to Support Young Children’s Mathematical Development

The purpose of this critical analysis was to investigate the young children’s sense of numerical magnitudes and the important attributes of classrooms where children in kindergarten and first grade are exposed to mathematics. This study aimed to offer guidelines that will assist teachers as they teach mathematics to children between the ages of five and seven.     

中小学教师数据素养评价指标体系构建

教育数据在教育领域不断渗透,教师的数据素养水平对于有效利用教育数据、合理判断学生的行为具有重要影响。本研究旨在用德尔菲法构建中小学教师数据素养评价指标体系,为评估中小学教师数据素养提供参考依据。通过文献分析梳理中小学教师数据素养评价指标,选择相关领域专家12人,采用德尔菲法进行2轮专家意见征询,根据专家打分计算指标权重,形成中小学教师数据素养评价指标体系。问卷征询专家的积极系数为100%,专家权威程度均值为0.72,确定的一、二级指标重要性均值均大于4.00,变异系数均小于0.25,符合德尔菲法要求。最终形成了包含数据意识、数据知识、数据操控技能、数据应用能力、评价交流数据、数据思维6个一级指标和19个二级指标与40条具体内容的中小学教师数据素养评价指标体系。对46位教师进行小范围试用,验证了其科学性与可靠性,该评价指标体系可作为评价中小学教师数据素养发展水平的参考测量工具。     

《操作系统》教学中的几点思考

《操作系统》是计算机专业的核心理论课之一,无论在教学、科研中还是软件产业及国家信息安全中都处于非常重要的地位。通过针对目前学生学习现状和特点的分析,结合自己的教学经验,提出了一些建议。     

现代化:网络环境下学报发展的必由之路

硕大无比的网络,神奇地“网”住了整个世界。网络环境也迫使学报从编辑主体到编辑手段、经营管理工作走上了现代化的道路。所以,现代化是网络环境下学报发展的必由之路。     

网络检索工具的发展与应用

阐述了网络检索工具的发展概况及各种网络检索工具的一般特点，以及如何有效利用这些网络检索工具获取网络信息。     

Web检索工具性能效果比较研究

利用Web检索工具的帮助文件，比较研究了Yahoo!、AltaVista、Infoseek、Excite、Web Crawler和Magellan的检索性能，并通过教育、科普和体育方面的三个查询实例比较研究了Yahoo!、Alta Vista和Excite的检索效果。对全面获取有效信息提出了建议。     

Copyright or copyleft?: An analysis of property regimes for software development

Two property regimes for software development may be distinguished. Within corporations, on the one hand, a Private Regime obtains which excludes all outsiders from access to a firm's software assets. It is shown how the protective instruments of secrecy and both copyright and patent have been strengthened considerably during the last two decades. On the other, a Public Regime among hackers may be distinguished, initiated by individuals, organizations or firms, in which source code is freely exchanged. It is argued that copyright is put to novel use here: claiming their rights, authors write ‘open source licenses’ that allow public usage of the code, while at the same time regulating the inclusion of users. A ‘regulated commons’ is created. The analysis focuses successively on the most important open source licenses to emerge, the problem of possible incompatibility between them (especially as far as the dominant General Public License is concerned), and the fragmentation into several user communities that may result.