基于知识元类型的高职英语在线课程可视化视觉表征应用研究

Research on the Practice of Visual Representation of Visualization of Vocational English On-line Course Based on the Types of Knowledge Elements

随着数字多媒体技术的发展,可视化视觉表征手段在在线课程中得到广泛应用。高职英语知识元可分为形态陈述性、内容陈述性、效用陈述性、内容程序性等四种类型,由语用场景、思维过程、逻辑关系、语义概念以及范例展示五种内容构建路径,通过图形图表、语义网络、图片影像等多种表征手段转换成视觉表征符号。对其应用效果的调查和学业成绩的分析发现,可视化视觉表征虽对程序性知识的促进作用不明显,但能辅助词义和语法概念的理解、搭建有效语用情景,提高语言输入的可理解性和有效性。建议在线课程可视化设计中综合考虑学习者的知识背景、视觉内容关联性等因素,综合采用多模态符号表征手段。

With the development of digital multimedia technology,visual representation has been widely used in online courses.Higher vocational English knowledge elements can be divided into four types:form statement,content statement,utility statement and content procedural,which consists of five content construction paths:pragmatic scene,thinking process,logical relation,semantic concept and example display,and can be transformed into visual symbols by various representational means such as graphics,diagrams,semantic networks,pictures and images.The investiga⁃tion of its application effects and the analysis of academic achievement show that visual representation has no obvious pro⁃moting effects on procedural knowledge,but it can assist the understanding of word meaning and grammatical concepts,build effective pragmatic scenes,and improve the comprehensibility and effectiveness of language input.The paper pro⁃poses to consider learners'knowledge background,visual content relevance and other factors in the visualization design of online courses,and adopt multi-modal symbolic representation.