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数学课外作业是数学课堂教学的自然延伸与补充,是学生进一步理解、巩固、运用所学知识的手段,也是学生由知识向能力转化和发展的有效途径。创新数学作业方式,提高学生学习的自主性和学习兴趣是提高作业效果的关键。而现代信息技术,为创新数学作业方式提供了强有力的技术支持和提供了丰富的作业资源。 相似文献
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课外作业与提高初中生的语文素质息息相关,初中语文教师应重新认识课外作业的重要性,认识到语文学习不应仅仅局限在课堂上,教师还要把教学向课堂外延伸。课外作业是延伸语文学习的重要渠道,它可以让学生在巩固旧知识的同时学习到新知识。在新课程改革背景下,教师应学会运用现代教育理念,设计出新颖、别致、个性化和人性化的课外作业。 相似文献
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语文作为一门基础学科,是深入学习其他学科所必不可少的基石。除课堂教学之外,语文课外作业也是语文学习的重要补充。目前,语文课后作业的布置在很大程度上体现了现今教育制度的弊端,改革已迫在眉睫。 相似文献
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作业评语是教师情感输出的载体,是小学语文教学的重要环节,体现教师对学生学习成功的认可,是提高语文教学质量的重要途径。本篇文章以滁州市紫薇小学为例,采取问卷调查和访谈的方式对小学语文教师作业评语现状进行了调查。结果表明,学校出现教师忽视学生作业评语的现象,不能根据学生的差异运用不同的评语方法评价学生作业。对于这些问题,本论文尝试从社会、学校、教师、学生等方面分析原因并给出解决问题的对策和方法,认为要从作业评语的认识、批改方式等方面入手,体现学生的个体差异性,善于鼓励学生。希望此次调查能够探索到进一步优化小学语文教师作业评语的策略,从而提升学生学习积极性,整体提高语文教学质量。 相似文献
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随着新课改的实施,初中语文教育的思想及理念都在不断创新,全新的教学对策引领着我们初中语文作业的设计理念,但是,在初中语文课外作业的设计方面,学生的兴趣常常被单纯重复且内容枯槁的课外作业所削弱,本文作者通过对当前初中语文课外作业的设计现状进行研究,指出语文课外作业设计方面现存在的问题,进一步讨论日后该怎样精心设计初中语文课外作业。 相似文献
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我们要重视作业的设计,积极实施多样化的语文作业形式,培养和发展学生的主体意识,给学生提供自我表现的机会,让学生成为作业的主人,逐步改善学生的语文学习方式、方法。 相似文献
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作业设计是实施素质教育、进行课程改革的重要载体,应有助于学生良好习惯养成、语文素养的提高;有助于学生把知识转化为能力;有助于学生创新精神、创造能力及独立人格的培养。但长期以来．作业对学生而言。几乎是负担的代名词。说到作业,肩上就感觉沉甸甸的。即使不是如此,也谈不上喜悦,更谈不上让学生“不亦悦乎”。由此可见,作业的黯然失色．使它失去应有的魅力和作用。课内教学与课外作业就像两条腿,不能平衡走路,就会让学生带有“残疾”。作为教师,我们应该重审作业的现状,让它焕发健康和长远的光彩。 相似文献
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A research group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol-a chemical found in the skins of red grapes in red wine-can improve the sensitivity of mice to the hormone insulin according to a report in the October issue of Cell Metabolism.…… 《中国科学院院刊(英文版)》2008,22(1):14-15
Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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Active biological molecules functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery disease diagnosis therapy new nanodevice construction.…… 《中国科学院院刊(英文版)》2008,22(1):22-22
Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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Leah A. Lievrouw 《The Information Society》2000,16(2):155-159
This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment. 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献