基于信息流分析的媒体技术教学应用的研究理路

A Research Approach on Instructional Application of Media Technology Based on Analysis of Information Flows

教学的对比实验研究存在研究问题定位失误、对比项界定不清、无效的有效性证据、实验设计存在缺陷、把准结论当成定论等问题，无法证明媒体技术的教学有效性，不能帮助人们在细节上理解媒体技术的教学意义。而基于信息流分析的教学研究，以可重现的教学系统为研究对象，根据实际发生的教学信息流数据推算教学系统质量的整体特征，以此考察媒体技术在教学中的实际作用，这将是媒体技术教学应用研究的新理路。IIS图分析法是相对成熟的基于信息流分析的研究方法。该文提出，利用IIS图分析法可拟定技术产品的知识激活量、激活贡献度、媒体多元性贡献度和功能利用率四个特征指标来表征特定技术产品对教学的实质贡献及教学对它的依赖程度，并通过信息流呈现媒体技术对教学支持的细节，能真实地反映技术产品的教学价值。IIS图分析法所带来的“技术—产品—功能—应用”的思考框架将大大有助于智慧教室等高端产品的设计、开发、试用、推广、升级以及学校的选购等实践工作。

There are such defects as wrong research focuses， ambiguous comparative items， invalid evidence of the instructional effectiveness， defective experiment design， and regarding quasi-conclusions as real conclusions in instructional comparative experiments. It can’t demonstrate the instructional effectiveness of media technology and help people understand the instructional value of media technology on details. As a new research approach on instructional application of media technology， analysis of instructional information flows takes repeatable instructional system as the research object reckons the overall characteristics of instructional system from obtained instructional information flows. In this way， it can evaluate the instructional function of media technology. AMBI (Analytical Method Based on IIS-map) is a mature analytical method of instructional information flows. In this article， four characteristic indicators of a media technology product are propounded by AMBI: quantity of activation， contribution of activation， contribution of media diversity and ratio of function utilization. These four indicators can characterize the contribution and dependency of media technology for instruction， and provide the evidence of contribution to instruction by information flows. Thus， the instructional value of media technology product is revealed. AMBI provides a thinking framework of ＂technology-productfunction- application＂， which will significantly improve the design， development， trial， extension， upgrading and help school purchase such advanced product as a smart classroom.