The Design And Development Of Senior Middle School Chemistry Micro-course

Micro-course refers to the video as the main carrier and records the process of teaching and learning activities in which the teachers explain a certain knowledge point(focus,difficulties,doubts).The application of Micro-course not only helps to effectively promote students' autonomous learning,but also helps promote the development of teachers' professional level.the current researches on Micro-course mainly focus on the basic concepts of Micro-course,the course design,the influence of Micro-course on current education,and the problems encountered in the process of development and application of Micro-course.However the Micro-course researches on specific subjects,especially on chemistry teaching is relatively little.Therefore this paper aims to research the design and development of chemistry Micro-course in senior middle school.The author hopes that the result can provide some help for the first line chemistry teachers about the design and making of Micro-course.Through referring and combing the relevant researches,the author defines the related concepts of micro-class and the theoretical basis of the design and development of Micro-course.Meanwhile the author proposes the strategies about the design of chemistry micro-course in high school,they are(1)the subject should be “refinement”(2)the subject should be “accuracy”(3)the subject should be “validity”.Furthermore,the author formulates the design principles,they are(1)focus on the subject closely(2)be complete(3)be efficient.Moreover,the author introduces the theoretical analysis and technical process of the design and development of micro-course,they are,(1)the analysis of function(2)the analysis of feasibility(3)the analysis of students(4)the analysis of the teaching contents and objectives(5)the design of teaching idea(6)the design of media(7)the teaching design of micro-course(8)the tasks design of autonomous learning(9)the design of micro-exercise(10)the design of learning feedback(11)the arrangement of resource(12)the design of script(13)the determination of the recording mode(14)the formation of the team(15)the preparation of the hardware and software(16)the recording of micro-course(17)post production.Finally,combining the characteristics of chemistry,the author selects four models: the basic concept,basic theory,elements and compounds,and organic chemistry from the high school chemistry teaching content,and designs one micro lesson for each knowledge point,including work principle and application of electrolytic cell,the chemistry of the "iron triangle" ion reaction,methane substitution reaction.