微型学习视频在教学专家系统中的应用研究

The Application of Micro Learning Videos in the Instructional Expert System

论文以知识点及其相互间关系为核心、构建了基于学科本体的教学专家系统。同时，将“微型学习视频”引入到教学素材库本体的设计中，从教学微策略等角度讨论了微型学习视频的设计原则和特点，从教学宏策略等角度提出了基于知识空间理论的微视频的选编算法。以“氧化还原”教学专题内容为例进行了教学实践活动，阐述了基于微视频的教学专家系统的自主学习模式及其教学流程，并采用实验班和对照班对比研究的方法，验证了选编算法的可行性及利用该系统开展自主学习有效性的教学效果分析。基于微视频的教学专家系统在具备“智能性”和“个别化学习”功能的同时，更具有“移动学习”时代的时代性和普适性，能够提高学生的学习效率。

Instructional Expert System is designed and developed based on the subject ontology and the relationships among knowledge. ＂Micro learning video＂ is introduced into the instruction material ontology. The principles and characteristics of designing micro learning videos are discussed in detail in the base of Micro Strategies. The algorithm of learning path is brought forward in the base of Macro Strategies and Knowledge Space Theory. Redox is chosen to testify the feasibility and validity of the system. With the method of comparative study on the experimental class and that in comparative class， self-regulated learning mode is uesed and verified to be helpful， and the result is significant. The Instructional Expert System with Micro learning videos is not only intelligent and individual， but also a sign of the times and universality. The system is helpful to improve learners' learning efficient.