Analysis And Optimization Design Of Chemistry Micro-class Production In Junior High School Teacher

With the presentation of "Internet plus" plan,it is necessary to profoundly integrate information technology and subject teaching in real development.Micro-class,which meets the demand of personalized learning,fragmented learning,mobile learning etc.in network era with its “shortness and brevity”,has become one of the entry points of China’s education reform.Teachers,as the developers of digital teaching resources and practitioners of information technology,are required to master the new skills on how to design,make,apply,and evaluate micro-classes.Investigation on the studies concerning micro-class in recent years reveals that related studies have been increasing in China,but fail to be systematic and comprehensive enough.Moreover,researchers have paid little attention to the development and application of the micro-classes bearing the discipline characteristics and knowledge types of chemistry.This study statistically analyzed 26micro-classes made by the teachers of junior middle school who accepted the chemistry training of “National training plan”(2016).The following results were obtained:(1)most of the micro-classes were explicitly topic-oriented and revolved around key and difficult points;(2)most of the micro-classes were basically clear in content logic and focused on subject ideology’s infiltration and resources’ completeness;(3)most of the micro-classes reached the required standard of production skill fundamentally,while needed further improvement in their asides.Case analysis was further conducted on some representative micro-classes of different knowledge types.It was suggested that micro-classes should met the“micro” standard and conform to the learning demand of students in optimization design.In addition,three key links should be handled:(1)a good topic provided value premise for a micro-class;(2)effective teaching design was the key of an excellent micro-class;(3)(sub-lens)script design laid production basis for an excellent micro-class.