Design And Application Research Of Interactive Video Microcourses In High School Biology Large Unit Teaching

In recent years,with the continuous promotion of the process of educational informatization,the combination of information technology and classroom practice has become more and more close,and the application and dissemination of micro-class has become increasingly widespread.Especially in recent years,due to the establishment of the platform for high-quality courses in basic education,a boom of recording and applying micro-class has been set off among front-line teachers.Although micro-class in the traditional sense has the advantages of short time,easy dissemination,and free from time and space constraints,it lacks interactivity,and students often have a weak sense of participation and are not easy to concentrate.The interactive video can make up for the shortcomings of traditional micro-class,and enhance students’ sense of classroom participation and learning efficiency by interacting with games and topics.With the introduction and implementation of the "Biology Curriculum Standards for Senior High School(Revised in 2019 and 2020)"(hereinafter referred to as the "Curriculum Standards"),how to cultivate students’ core biological literacy has become a major teaching and research hotspot,and large unit teaching is considered to be an important means to cultivate students’ core biological literacy.The curriculum standard divides the high school biology teaching content into 10 major concepts,each of which is divided into several sub-concepts,and the sub-concept can be divided into several important concepts.Under the guidance of the basic concept of "content focusing on the big concept","unit teaching" has become a hot research direction in recent years.At present,there are few related research results on unit teaching mode,method and application effect.It is very important to explore an efficient and easy unit teaching mode.This study first used the literature survey method to sort out the research status of unit teaching and interactive video-based micro-class,and defines the concepts of "unit teaching","core literacy","interactive video" and "micro-class";The present situation of the implementation of unit teaching and micro-class in Xi’an was investigated by questionnaire,and the current situation of students’ biology learning was investigated;Using the educational experiment method,the classes were divided into two groups: the control group and the experimental group.The experimental group carried out the large unit teaching combined with the interactive video-based micro-class.The control group maintained the traditional teaching mode,and demonstrated the implementation effect of the large unit teaching combined with the interactive video-type micro-class through the construction of the knowledge framework,test results,questionnaires and interview data.Through a questionnaire survey,it was found that although large unit teaching was a hot topic in recent teaching and research,front-line teachers have done not have a deep understanding of large unit teaching,and the implementation of large unit teaching was not ideal;One of the reasons for the less application of micro classes in daily teaching was the poor interactivity;Through literature research and questionnaire surveys,this study believed that it was feasible to combine interactive video based micro classes with large unit teaching in high school biology,and had conducted a teaching design that combining interactive video based micro classes with high school biology large unit teaching.It has been applied to teaching practice.Through setting up experimental and control classes,the application effect had been analyzed and evaluated,and it had been found that combining interactive video based micro classes with high school biology large unit teaching was conducive to improving students’ academic performance,improved the knowledge system,developed core literacy,and improved learning status.Based on the research results,this study summarized the design principles of high school biology interactive video based micro-class based on large unit teaching,and constructed a process model for high school biology large unit teaching design combined with interactive video based micro-class,provided reference for future research on large unit teaching,interactive video based micro lesson,and large unit teaching combining interactive video based micro lesson.