Investigation On The Current Situation Of Chemistry Micro-Lecture In Middle School And Design Practice

The continuous integration of internet and education has promoted the rapid development of microlecture in primary and secondary education.With its characteristics of short time,strong pertinence,easy dissemination,interest and visualization,micro-lecture injects new vitality into traditional teaching and presents more possibilities for teaching mode and learning method.Micro-lecture has played its unique value in all disciplines,especially in the middle school chemistry teaching,which promotes the development of chemistry education with its remarkable advantages in the aspects of the dynamic micro-knowledge,the reproduction of experimental process,the breakthrough of key and difficult points in teaching,and the standardization of chemical terms.To carried out the research work with the title of “Investigation on The Current Situation of Chemistry Micro-Lecture in Middle School and Design Practice”.First of all,it is necessary to understand the current situation of the design,production and application of micro-lessons by chemistry teachers in middle schools,and find out their existing difficulties.Then,the design and production process of micro-course is given in this paper and two cases are designed.Finally,the suggestions are put forward for the design and production of micro-lessons for middle school chemistry teachers.On the basis of cognitive load theory,constructivism theory and learning pyramid theory,this study explores how to improve the level of design and production of micro-lesson by chemistry teachers in middle schools by means of questionnaire survey.There are the following four aspects.(1)The research work related to micro-lesson is analysed and the characteristics and advantages of micro-class is explored.Through literature review,it is found that the concepts related to micro-lesson include micro-lesson,micro-video and MOOC.Although they have something in common,they are different from each other.The characteristics of micro-lecture mainly include,short time,clear teaching objectives,strong pertinacity,small resource capacity,easy to spread,high utilization rate,interesting,visual and simple design and development,no professional restrictions..Its advantage in middle school chemistry teaching is that it can break through the teaching key and difficult points,reproduce the experimental process,observe the microscopic changes and standardize the chemical terms..(2)Questionnaire survey was designed to understand the current situation of designing and making micro-lesson for chemistry teachers in middle schools.The author sent questionnaires on the network platform.The research objects involved some middle school chemistry teachers in 25 provinces.The survey results show that most middle school chemistry teachers are familiar with the concept of micro-lecture.75.23% of teachers often use micro-lesson in actual teaching.and 53.27% of them have made micro-lessons by themselves.There are also the following problems.The personal concept of teachers has not changed,and they lack a profound understanding of the meaning of micro-lessons.They are not familiar with the basic theory,design process and production methods of microlesson.They have few ways to acquire relevant materials and resources for making micro-lesson.Relevant departments of the school do not pay enough attention to micro-lesson,lack of hardware and software support.There are few professional micro-lesson software developed by educational enterprises related to microlesson,and they are not strongly connected with the subject,so it is difficult for teachers to master.The lack of management of micro-lesson resources leads to fewer high-quality micro-lesson.(3)Combined with the results of the survey,the design and production principles and procedures of the micro-course are proposed and the typical cases are designed.Based on theoretical research and practical experience,the paper discusses the design principles of micro-lecture,mainly including the principle of systematization,the principle of consistency and the principle of practicality.The design and production process of chemistry micro-lesson in middle school is divided into six parts: topic selection design,teaching design,material collection,courseware production,script design and video production,and each part is introduced in detail.The questionnaire results show that most teachers are not familiar with script design and not know how to obtain the relevant materials.Therefore,the author focuses on material collection and script design.According to the design and production principles and procedures,the two cases of “calculation of chemical reaction heat” and “preparation of the solution of the molarity concentration of certain substances” are selected and designed in this paper,And according to the design of the case of teachers interview.(4)Some suggestions are put forward to promote the design and production of micro-lesson for middle school chemistry teachers.This paper puts forward corresponding suggestions from the perspectives of middle school chemistry teachers,relevant departments of schools and relevant educational enterprises.Suggestions for middle school chemistry teachers,they should first improve their teaching ability of information technology and promote the development of chemistry education.Second,they have to actively participate in micro-lecture activities and integrating into the informational environment.And they ought to be diligent in thinking and practice to improve their abilities in Micro-lecture design and production.Finally,it is suggested that they could actively take part in the micro-lecture team and create high-quality microlectures.Suggestions for relevant departments of the school:,governors should change their educational concept,attach importance to the development of information-based teaching,create good atmosphere,encourage and support the development of micro-lecture.Second,schools should equip with the information teaching studio,provide the workplace.Third,relevant information should be recommended and resource services ought to be provided.Suggestions for education enterprises related to micro-lessons:,they should first invent professional micro-lecture software and build solid foundations for micro-lecture development.Second,it is better to standardize the construction of resource platform in order to make it convenient for teachers and students in using.And they can put improving the quality of micro-lecture resources and promoting the development of micro-lecture as another solution.At the end of the paper,the author makes a summary and prospect,hoping that this research work could help to improve the design and production level of micro class of chemistry teachers in middle school,so as to make micro class play a better role in chemistry education.