The Application Of Micro-lecture With Guidance Case In Junior High School Physics Teaching

With the proposal of "double reduction" policy,the Physics Curriculum Standard(2022)has been adjusted to some extent,as a result,teaching time in class has been reduced,which not only requires teachers’ ability to control the class,but also puts forward higher requirements for students’ transformation,transfer and self-learning ability.Teachers must increase lessons’ content,and students must learn as much in less time,so students must make full use of their spare time.Do a good job before class preview,absorb knowledge during class properly,try hard to review after class,summarize what they have learned in class,and more efficiently check and fill in the gaps.Effectively combine the Guidance Case with the micro-lesson to play a complementary role.The micro-lesson with the Guidance Case should be used to help students carry out independent learning,which can strengthen their knowledge transfer ability and self-learning ability.The main questions of this study are:1.How to associate the Guidance Case with the micro-lesson? 2.Will students’ abilities can be improved?There has been a preliminary understanding of the development of "micro class" at home and abroad by referring to periodical materials.Domestic researches on "micro-lessons" started later.With the development of information technology and the special environment under the epidemic,more attention has been paid to micro-lessons.However,there are still few relevant researches on the full integration of micro-lessons and Guidance Case into daily teaching.At the same time,the author conducted a questionnaire survey,an interview with students in view of their use of micro-lessons and Guidance Case,as well as a collection of their problems and attitude.I learned that most students are subjectively willing to learn physics well,but due to various reasons such as learning methods and habits,they lack corresponding guidance and support in learning,which leads to poor learning effect.Finally,it is difficult for students to solve the problems in the Guidance Case after independent preview.Instead,the Guidance Case becomes a supplement for after-class exercises and gradually evolves into a "exercise book".It downplays its original role;After learning the micro-class,students will have a preliminary understanding of the knowledge point,but they still lack exercises to realize the internalization of the knowledge.Therefore,consider the possibility of complementarity between the two,aiming at perfecting a micro-class design system with Guidance Case.Micro-lessons are used to deepen the effect of students’ independent learning,so that students can acquire enough knowledge to complete the Guidance Case in advance;The Guidance Case is used to test the effect of students’ learning micro-lessons,and the Guidance Case is used to strengthen students’ ability to draw inferences from one example to help students better self-study.Based on the preliminary questionnaire survey,this study proposed a micro-class design system supplemented with Guidance Case,and selected two grade 8 classes with similar scores and score distribution from Ya’an No.7 Middle School.One class continued to carry out regular teaching,while the other class applied micro-classes supplemented with Guidance Case into the teaching process,and used the concentrated time before noon and evening self-study to carry out pre-class preview or after-class summary.On weekends,we use wechat,QQ and other platforms,supervised by parents,and strictly control the time in the implementation process,so as not to add unnecessary burdens to students.After a period of experiment,the analysis is carried out based on the data of the unified examination.It is found that micro-class teaching supplemented by Guidance Case has an obvious promoting effect on middle students and underperforming students.These students all have problems in summarizing.Guidance Case and micro-class guidance and training methods can greatly help them in learning.For particularly excellent students,although their scores have not improved significantly,it can be analyzed through comparison that micro-lessons supplemented by Guidance Case can further help students consolidate knowledge.Finally,the conclusion is drawn that the application of micro-lessons supplemented by Guidance Case in daily teaching can provide effective guarantee for students’ self-study,so as to improve the learning effect of students.