“恰当性”在外语听力教学媒体选择中的实现

Realization of "Appropriateness" in the Process of Selecting Teaching Media for Foreign Language Listening Teaching

"恰当性"是事物所具有的稳妥适当的性质。教学媒体是教学活动的中介和促进学习的基本要素。选择恰当的教学媒体,是保证外语听力教学效果的重要因素。"恰当性"为媒体选择的技术过程提供关于如何建立不同媒体原型与教学效率最佳化模型的理论框架。用"恰当性"原则将计算机网络学习终端、多媒体教学系统、语言实验室和调频广播系统等四种外语听力教学主流媒体的特点与教学的个性化要求进行"对位",运用动态多维度系统估计方法对媒体进行成本分析、效能预测和绩效差距分析,可以既满足外语听力教学需求,又凸显调频广播系统、多媒体教学系统、计算机网络学习终端、语言实验室四种媒体"有价值"绩效(Pw)74:18:2:1之差距。基于该观点,调频广播系统在外语听力教学中更能体现"恰当性"整体最佳化原则。

＂Appropriateness＂ is the stable and proper nature that things possess. Teaching media is the medium of the teaching activities and an essential element for promoting learning. To select the appropriate teaching medium is an important faetor to ensure the effectiveness of foreign language listening teaching. ＂Appropriateness＂ is regarded as the theoretical framework that guides the technical process of selecting media as to how to build the optimal model between different media prototypes and teaching efficiency. With the principle of appropriateness, the mainstream teaching media such as language-learning computer terminals, multimedia teaching systems, language labs and FM radio listening systems could be matched to the individualized teaching requirements. This would be analyzed by the means of dynamic multi-dimensional systematic cost estimation method in aspects such as the cost, the efficiency and the difference of performances and thus this would not only satisfy the needs of foreign language listening teaching, but also highlights that the difference of ＂valuable＂ performances （Pw） （the ratio is 74：18：2：1） among the FM radio system, the multimedia teaching system, the computer network learning terminal, and the language laboratory. Based on this view, FM radio system would better reflect the global optimization principle of ＂appropriateness＂ in foreign language listening teaching.