对称性在物理解题中的应用     

汤学文 《物理教学探讨》2001,19(8):23-24

在各种物理模型、物理现象、物理规律中，普遍存在着和谐而优美的对称性。对称法就是利用给定物理问题在某一部分的特征，来推知其对称部份相同的特征。利用这一思路来分析和求解问题，可使分析问题的思路变得清晰，解决问题的步骤变得简捷。而且还可把一些表面上不具对称性的问题转化成具有对称性的问题，以便于求解。中学物理中的对称可有以下几种情况。  相似文献   

高职高专英语专业“任务型”教学现状调查及研究     

唐慧  王芳  冯秋怡 《海南广播电视大学学报》2007,8(2):61-63

课题组对我省三所具有代表性的高职高专院校（英语专业）大二的师生进行了调查，主要采用问卷调查和访谈的方式，通过数据处理，分析目前海南高职高专院校中英语专业（综合英语）教学现状及存在问题。提出激活英语课堂的方法之一——任务型英语教学。  相似文献   

热带植物花卉的抗氧化性研究     

刘红  胡咸俊王维汤威峰  王琳苏秀丹  赵丹薇钟琼芯 《海南师范学院学报》2007,20(4):339-341,354

为了筛选具有抗氧化性的热带花卉，对海南师范大学校园中的12种花卉的鲜花和干花的水提取物、50％乙醇提取物和70％丙酮提取物进行清除DPPH的实验．结果表明：紫薇、干凤凰花、干洋金凤、大叶龙船花卉和干小叶龙船花卉的抗氧化效果最好．  相似文献   

中国高考改革应有国际视野     

唐滢 《湖北招生考试》2006,(20)

中国的高考改革正处于攻坚阶段,面临许多困惑和困境。招生考试制度的统一性与多样性、高校招生的自主权、招生考试制度与学校教育的关系、招生评价体系、录取方式、高校的收费政策、学生财政资助政策等问题,都应深入研究和探讨。目前,世界上许多国家也在进行大学入学制度的改革,其中不乏可资借鉴的经验。中国的高考改革应有国际视野。  相似文献   

The Intellectual Structure of Research on Educational Technology in Science Education (ETiSE): A Co-citation Network Analysis of Publications in Selected Journals (2008–2013)     

Kai-Yu Tang  Chin-Chung Tsai 《Journal of Science Education and Technology》2016,25(2):327-344

The main purpose of this paper is to investigate the intellectual structure of the research on educational technology in science education (ETiSE) within the most recent years (2008–2013). Based on the criteria for educational technology research and the citation threshold for educational co-citation analysis, a total of 137 relevant ETiSE papers were identified from the International Journal of Science Education, the Journal of Research in Science Teaching, Science Education, and the Journal of Science Education and Technology. Then, a series of methodologies were performed to analyze all 137 source documents, including document co-citation analysis, social network analysis, and exploratory factor analysis. As a result, 454 co-citation ties were obtained and then graphically visualized with an undirected network, presenting a global structure of the current ETiSE research network. In addition, four major underlying intellectual subfields within the main component of the ETiSE network were extracted and named as: (1) technology-enhanced science inquiry, (2) simulation and visualization for understanding, (3) technology-enhanced chemistry learning, and (4) game-based science learning. The most influential co-citation pairs and cross-boundary phenomena were then analyzed and visualized in a co-citation network. This is the very first attempt to illuminate the core ideas underlying ETiSE research by integrating the co-citation method, factor analysis, and the networking visualization technique. The findings of this study provide a platform for scholarly discussion of the dissemination and research trends within the current ETiSE literature.  相似文献   

远程多媒体学习软件教学设计模式初探   总被引：13，自引：0，他引：13  

唐伟 《中国远程教育(综合版)》2001,(1):37-39

在远程学习条件下，教学者是以媒体技术作为传播手段与学习者进行交互的，在现代远程开放教育中更是以多媒体计算机作为主要的传输手段，学习者所处学习环境与课堂环境有很大不同。相应地，远程多媒体学习软件，其教学设计也与课堂教学条件下的多媒体教学软件的教学设计存在着明显差别。本文结合现代远程开放学习的特点，提出了一个远程多媒体学习软件的教学设计模式。  相似文献   

孔门乐教浅探     

汤文琪 《齐齐哈尔师范高等专科学校学报》2006,(3):3-5

孔子是我国春秋时著名的教育家。为了将其弟子培养成为"不器"君子,孔子创立了一套独特的教学理论。其教学内容以"六艺"为主,而礼乐为"六艺"之首,由此可见其对乐教的重视。《论语》、《礼记》中还有很多论及乐教的文字,其中蕴含着丰富的音乐美学思想与音乐教育思想。  相似文献   

The interplay of representations and patterns of classroom discourse in science teaching sequences     

Kok-Sing Tang 《International Journal of Science Education》2016,38(13):2069-2095

The purpose of this study is to examines the relationship between the communicative approach of classroom talk and the modes of representations used by science teachers. Based on video data from two physics classrooms in Singapore, a recurring pattern in the relationship was observed as the teaching sequence of a lesson unfolded. It was found that as the mode of representation shifted from enactive (action based) to iconic (image based) to symbolic (language based), there was a concurrent and coordinated shift in the classroom communicative approach from interactive–dialogic to interactive–authoritative to non-interactive–authoritative. Specifically, the shift from enactive to iconic to symbolic representations occurred mainly within the interactive–dialogic approach while the shift towards the interactive–authoritative and non-interactive–authoritative approaches occurred when symbolic modes of representation were used. This concurrent and coordinated shift has implications on how we conceive the use of representations in conjunction with the co-occurring classroom discourse, both theoretically and pedagogically.  相似文献   

经济发展是制约推普进程的潜在因素     

唐秀伟  曲殿宇 《绥化学院学报》2007,27(1):165-166

在推广普通话的过程中,各种因素从不同方面对普通话的推广产生了不同程度的影响,其中,经济的发展是一个潜在的、具有决定作用的因素,它决定普通话推广的深度和广度。因此,在世纪之初,我们必须搞好经济建设,以使普通话能够早日普及。  相似文献   

新课标下的数学课堂教学     

张锐  唐小慧 《甘肃高师学报》2005,10(5):70-73

数学课堂教学不仅是传授知识、形成技能、发展智力的过程,而更是教师引导学生经历数学化的过程,是促进学生全面、主动发展的过程,是承认学生差异、张扬学生个性的过程,是学生之间自主交流、合作探索的过程,是落实德育教育的过程,是理论知识和生活问题密切联系的过程,是数学课程资源的开发、利用、拓展的过程,是数学教师专业化发展的过程.  相似文献