浅谈新课改背景下如何提高课堂教学效果

随着新课程改革的不断深入,如何在新形势下提高课堂教学效果成为众多中学教师所关注的问题,文章结合笔者实际教学经验,以新课程改革为背景,以历史教学为研究对象,分析如何提高课堂教学效果。     

高中地理有效教学模式探讨

教学过程当中课堂教学一直占据着主要地位,新课程的改变也对课堂教学提出了更多的要求,对于地理课堂教学来说,面对新课程的需要,我们也要迎合其需要,进行改变,从思想、模式和方法上都进行革新,去寻找能够让学生用得上的地理教学以及对学生终身受益的地理教学方法。这才是现代教学的目的。本文结合近年来的新课程改革实践,对在地理课堂教学中如何提高其实效性进行如下分析。     

新课程改革指导下的初中历史教学方法变革

在新课程改革的教学背景下,初中历史教学方法发生了很大改变。本文简单介绍了传统历史课程的教学方法,并详细探讨了在新课程改革指导下初中历史教学方法的变革。     

初中体育教学自主学习的探究

自主学习作为新课程改革倡导的三种现代学习方式之一,它改变着我们的课堂教学模式,改变着学生的学习方式。     

改变教学方式、激发学生的学习兴趣、启迪学生思维

新课程呼唤课堂教学的改革,要求课堂教学必须打破传统模式,从有利于教师的＂教＂转向有利于学生的＂学＂,结合实际,针对改变教学方式、激发学生的学习兴趣、启迪学生思维进行了论述。     

新课程北景下的课堂教学改革

基础教育新课程改革对中小学课堂教学提出了新的要求,传统课堂教学的种种弊端,越来越不适应新课程的要求,课堂教学在新课程背景下必须改革,课堂教学主要应从课堂教学设计、课堂师生关系、教学关系、学生学习方式等方面进行改革。     

实施高中化学新课程后的体会与思考

实施新课程改革首先要更新教育理念,加强集体备课,改变教学设计的思路,将新课改的思想落实到课堂教学中。     

新课程背景下的课堂教学改革

基础教育新课程改革对中小学课堂教学提出了新的要求,传统课堂教学的种种弊端,越来越不适应新课程的要求,课堂教学在新课程背景下必须改革,课堂教学主要应从课堂教学设计、课堂师生关系、教学关系、学生学习方式等方面进行改革。     

浅谈电类专业的课堂教学改革

随着中职新课程教育改革的推进,改革课堂教学,融入先进的教学理念,已成为教师需要学习和探讨的热点问题。教学观念的更新,教学方式的改进,教学内容的整合,教学评价主体的改变是实现课堂教学改革的关键所在。     

新课程下的高中英语课堂教学

伴随着新课程改革的大潮,高中的英语教学也必须改变过去传统的教学方法才能充分展现语言教学课堂的动态格局,新课程的高中英语教师要与时俱进,创新教学方法,使课堂教学焕发出生命力。     

Low doses of a red wine ingredient figh diabetes in mice

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.     

To serve and promote science development via innovation

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.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

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.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

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."     

Molecular motor assembly of a biomimetic system

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.     

Cooler temperatures inductive to locust outbreaks

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.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

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.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

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.     

The Information Environment and Universal Service

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.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

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.