Design And Application Of Micro-Course In Chemistry Review Class In Senior High School

The emergence of the micro-course provides an excellent carrier for accelerating the educational reform in the information age,and also reflects the core concept of“all for each student development”in the new curriculum reform.The traditional chemistry review course has problems such as fast pace,many knowledge points,low student participation,and unsatisfactory review results.It is difficult for students of different levels to find a suitable review method for them.The review micro-course can make up for the shortcomings of the traditional teaching mode and effectively improve the teaching efficiency.It can design and produce according to different types of knowledge content,which is conducive to the realization of personalized teaching and teaching in accordance with the aptitude.The purpose of this study is to combine text,graphics,sound,images and animation into a variety of forms to create a micro-course.Exploring its application in review teaching,so as to achieve the purpose of improving the quality of teaching.Based on the analysis of the status quo of micro-curriculum and chemistry review research at home and abroad,this paper defines the concept of reviewing micro-courses.At the same time,through the student questionnaire and teacher interviews,we learned about the needs of high school students for chemical review,the application of teachers and students to micro-courses,and the teaching status of chemical review.From the investigation of the college entrance examination and the arrangement of textbooks,the content of chemical compulsory 1 was analyzed,and four common research topics were obtained,which named stoichiometry,ionic reaction,redox reaction and important compounds of iron.Under the theme,the corresponding knowledge points were selected to design and review the micro-classes,named“quantity of matter and its calculation”,“writing skills of ion equations”,“construction of knowledge network of redox reaction”and“Preparation of Fe?OH?₂”.According to the requirements of the new curriculum standard,it is classified into four types:problem-solving,key and difficult,core knowledge network and experimental guidance.It is applied to different teaching stages before,during and after class.Try to use the review-based micro-curriculum to assist classroom teaching,improve students'accuracy of solving the problem of“quantity calculation based on material quantity”,break through the difficult points of ion-related writing related to quantity,construct knowledge network of redox reaction and cultivate student autonomy the ability to review experimental content.Micro-courses on various topics include micro-teaching,study tasks,micro-courses,micro-practices and micro-videos.The author completed the reviewing micro-courses in the No.10 Middle School of Wuhai City,Inner Mongolia,and carried out the teaching practice.After the practice,the teaching effect was compared with the traditional teaching,and the micro-course was improved according to the feedback of teachers and students.Practice shows that students use micro-courses to assist in learning,master certain problem-solving skills,optimize the knowledge network,and improve their academic performance.Studies have shown that applying the review micro-course to teaching stimulates students'interest in learning chemistry,improves the initiative and enthusiasm of students'chemistry review,and cultivates the ability of students to review,organize,and summarize their own self-review,and enhance the core literacy of students.at the same time,the development of the review micro-course has broadened the teachers ideas for reviewing the teaching design,enriched the connotation of the micro-course,and provided teaching cases for those who are interested in developing micro-courses,which has a strong guiding significance.