【作者】 刘红；

【导师】 栾峻峰；

【作者基本信息】 山东大学 ， 软件工程， 2009， 硕士

【摘要】 20世纪90年代以来,欧美等发达国家纷纷提出“主题探究”和项目学习活动,在我国,随着新一轮课程改革如火如荼的开展,研究性学习及其课程开发已成为基础教育改革的一大亮点。本课题来源于广东省高校现代教育技术“151工程”,其主要内容是指在“十五”期间,组织全省高校研制开发100个专题学习网站,建设50个专业公用资源库,开展100项基于网上资源利用的教学改革试验研究。本文以探究性学习为指导策略,网站为媒介的专题学习系统,重点研究邓演达的社会主义思想、人权理论、经济理论等与当代中国社会经济发展有密切关系的课题。信息技术教学作为以培养创新精神、研究能力和实践能力为目标取向的必修课程,它强调让学生通过研究性学习,对研究性课题进行探索、分析、研究,最后基于问题解决模式,在实践操作中培养学生科学的态度和价值观以及创新精神、创新思维、创造能力。本文在分析当前国内外学习系统及探究性学习发展背景的基础上,结合基于WEB的探究性学习特点和专题学习内容的特点,设计了探究性学习策略,并使用基于WEB的相关开发技术,实现了一个《邓演达思想研究》为案例的专题学习系统。再根据项目的背景,对专题学习系统进行了需求分析和功能设计。本文在下面的章节详细介绍了系统的技术实现过程。对于采用接受式探究性学习模式在系统中如何具体设计实现,以及系统安全机制的设计作了详细的介绍。本系统采用ASP+XML来构建,数据库则采用SQL Server 2000储存数据。在设计过程中,基于传统三层B/S结构的系统体系结构,并考虑到学习者应用系统开展协作式探究性学习时,需要与系统服务器交互大量数据,每次操作都需要从数据库提取然后传递给客户端,数据在中间没有办法保存,本文应用XML进行客户端与WEB服务器间的通信,使用XML处理数据,在客户端对变更的信息进行缓存,使数据的传输避免了在客户端和服务器之间大量重复传递和读取,降低了服务器的负担和出错率。在技术实现上,采用B/S结构弥补了C/S结构的程序开发量大、系统维护困难、安全性难以保障等局限性。本系统采用ASP技术在执行效率上仍有一定弊端,在网络用户访问量大时,服务器的负担较重。这些问题还需要在以后的开发中解决和提高,建议采用更为完善和安全的ASP.net来代替ASP来构建系统。本文最后对研究的课题进行了总结,提出探究型专题学习系统的实质是为学习者提供了一个基于网络的专题探究式的数字化学习平台,强调通过学习者主体性的探索、研究来求得问题的解决,对于本系统的建设提出了自己的实现方法。而探究型专题学习系统建设的规范性、应用性,及执行效率都值得长期关注和探讨。更多还原

【Abstract】 Since 90’s in the 20th century, Europe, United States and other developed countries have put in "study with particular themes" and started many related projects; while in China, with a new round of curriculum reform, research-based learning and curriculum development has become a big matter of the reform of basic education. The issue stems from the project on modern educational technology named "151 Project" held by Guangdong Province, whose main content is to set 100 special study sites across the province, construct 50 public resource libraries and develop 100 studies of the use of online resources based on teaching reform during the "Tenth Five-Year" period. In this paper, the guidance of exploratory learning strategies, Web-mediated learning system feature, Deng Yanda’s socialist ideology, human rights theory, economic theory and so on closely related to the development of contemporary China has been given a focus.Teaching based on information technology aims to foster the spirit of innovation, research ability and practical ability, which emphasizes on allowing students to learn through research, to learn to analysis, research, and finally solve the problem. During this process, students’ scientific attitudes, values, as well as the spirit of innovation, innovative thinking, and creative ability are developed.In this paper, based on the analysis of the current learning system at home and abroad, the development of the context of inquiry learning and the characteristics of inquiry learning and thematic learning which take WEB as a basis, the strategies of inquiry learning is designed and realize a thematic learning system based on "Deng Yanda Thought" and the use of WEB technology. Systematical analysis and functional design of special study then was made.In the following sections of this paper the technical realizing of the use of exploratory learning and the design of security mechanisms in the system are given in detail. The system uses ASP + XML to build the database and data saved with SQL Server 2000. In the design process during the process of designing, three-layered B/S structure are served as the basis, and with a consideration that when the learners study with the help of this system, the exchange of the data are very frequent and during this process the data is impossible to be saved, so this paper suggest using XML to solve this problem. The application system carries out the style cooperating with the learner when probing into nature study with interactive large amount of data of system server, operation at every time all requires that the secondary data base extracts and then transfers end to the customer way does not preserve data in the middle. XML, the main body of a book, is applied to carry out the customer communication between end and the WEB server, using XML to sell a data at reduced prices. Information ending on alteration in customer carries out slow existence. Transmission using a data has avoided in large amount, repeating delivery and fetching in the customer between end and the server, have reduced server burden and error rate.In technology, B/S structure can make up for the disadvantages of C / S structure such as the large amount of program development, maintenance difficulties, and is hard to guarantee the security. The implementation of ASP technology still has certain defects, for example, when many user visits the network, the burden on the server is very heavy. These issues also need to address in the future development and suggest using a more perfect and securing ASP.net to replace the ASP to build the system.Finally, the contents of the study are summarized, and the purpose of topic-based learning system is to provide learners with a web-based thematic inquiry digital learning platform, emphasizing the subjectivity of the learner to explore, and to find the solution, and to achieve their own methods for building the system. Long-term concern and study on the application, implementation and executive efficiency are deserved.更多还原