Study On Teaching Interaction Of Micro-Course Based On Course Question Answering System

Micro-course,with its short content and fragmented learning time,has become the important resource of online learning at this stage.More and more educators are devoting themselves to the design and development of micro-course resources,and more and more learners are keen on micro-course learning.However,there is a serious "lack of interaction" in the current micro-course teaching practice,which reduces its important value in improving learners' online learning interactive experience and the level of problem solving.The main reason why micro-course can't provide effective interactive support for online learners is that online learning environment generally lacks real-time guidance from teachers,nor can it provide interactive learning system support with perfect functions.On the other hand,as an intelligent tool to support human-computer interaction,question answering system has achieved good application results in related fields.Combining it with specific curriculum content can effectively remedy the shortcomings of micro-course teaching interaction.For this reason,this study attempts to design and develop a question answering system based on the knowledge of the course from the perspective of its assisting microcourse teaching interaction,taking the micro-course of Chinese Character Formation as an example,and explore its impact on micro-course teaching interaction in practice.This study focuses on answering the following questions: 1.What challenges exist in the interactive practice of micro-teaching? 2.How to design the functional characteristics of the course question answering system to effectively support the micro-course teaching practice? 3.How does the course question answering system affect the interaction of micro-teaching?Based on this,this study firstly combs the research results of micro-course teaching interaction and course question answering system based on existing literature research,and clarifies the role of course question answering system in micro-course teaching interaction.Secondly,on the basis of analyzing the problems existing in the current interactive practice of micro-course teaching,the study on learners' interactive needs is carried out.Based on this,a course question answering system based on Chinese Character Formation is designed and developed.The TF_IDF model and Baidu API included in the system can support learners' accurate question answering of in-course knowledge and Web retrieval of out-of-course knowledge.At the same time,the interactive teaching effect of the question answering system of the course is tested by two ways: the teacher's application evaluation and the student's practice effect.Finally,through the systematic analysis of the data of students' practice results,further verify the impact of the curriculum question answering system on the interactive results of micro-course teaching.The results show that there are no significant differences in all dimensions of learner interaction at the professional level,while there are significant differences in autonomous learning ability groups.There is a significant positive correlation between learner participation and the dimensions of interaction results.Based on the conclusion of this study,the application model of curriculum question answering system in general learning situation is constructed,and relevant application suggestions are put forward to maximize the interactive effect of curriculum question answering system in teaching practice.