Research On The Instructional Design Of Micro-lecture In Mathematics Of Junior High School

In the era of education informatization and "Internet + education",under the influence of the new curriculum reform,micro-lectures have developed rapidly as a product of the combination of educational information technology and curriculum reform.The mathematics curriculum of junior high school is boring and abstract.In traditional teaching,students lack interest in learning,have difficulty concentrating for a long time,and cannot understand abstract mathematics knowledge.There are many problems in mathematics teaching.As a new type of teaching method and digital learning resource in today’s era,micro-lecture not only conforms to the development trend of the micro-era and the requirements of the new curriculum reform,but also helps to solve the current problems in traditional teaching meet the fragmented learning needs of learners.So it has positive practical significance to apply micro-lectures to junior high school mathematics teaching.Since the development of microlectures in China,it has attracted the attention of the majority of educational researchers,setting off a wave of "micro-lectures upsurge".Although there are many researches on microlectures in China,there are still some problems: attach importance to theoretical research but ignore the practical application of micro-lectures;attach importance to the application of information technology in micro-lectures but ignore the design of micro-lectures;There are still some deficiencies in the quality of course production,in terms of the depth and breadth of research.Therefore,it is necessary to strengthen the design and research of micro-lectures in order to develop high-quality micro-lectures.Based on the above research background,this research aims to improve the design and development of junior high school mathematics micro-lecture teaching.In this research,the author firstly collects and organizes the relevant literature of micro-lecture through the method of literature analysis,analyzes and compares the development status of micro-lecture at home and abroad,and expounds the concept and characteristics of micro-lecture,as well as micro-learning theory,constructivism learning theory and audio-visual education.Theoretical basis,etc.Through the method of questionnaire survey and interview,conduct surveys on students and interviews with teachers to understand the current situation of mathematics teaching in junior high schools and the application of micro-lectures in teaching,and demonstrate the necessity and feasibility of using micro-lectures in junior high school mathematics teaching.Then,based on the conclusions of the above analysis and induction,following the principles of micro-lecture teaching design,and based on the ADDIE model,a scientific and efficient junior high school mathematics micro-lecture teaching design model is constructed and the specific tasks of each part are explained in detail,making the model very systematic and operational;Finally,using the micro-lecture teaching design model constructed,a micro-lecture was designed and developed in "Solving Problems with One-dimensional Linear Equations-Encounter-type Problems" in the seventh grade mathematics book of the Jiangsu Education Edition,and applied to the actual teaching.And conduct micro-teaching experiments.The experimental method and interview method are used to test the teaching effect of micro-lecture.The research results show that students and teachers are satisfied with the micro-lectures designed and developed under the micro-lecture instructional design model.Solved some problems in junior high school mathematics teaching.This research constructs a systematic teaching design model of junior high school mathematics micro-lecture,and designs the micro-lecture lesson plan design template,student learning activity sheet design template and micro-lecture script writing template in the construction of the model,which is helpful for the future research and development of junior high school mathematics micro-lectures.The development provides theoretical basis and reference templates.