A Study On The Optimization Strategy Of Using Black And White Board In High School Chemistry Classroom Teaching

With the help of scientific and technological progress,conventional teaching methods have gradually integrated into new teaching methods,such as PPT,music,animation and video,so that knowledge can be presented in a rich and colorful form.New breakthroughs have been made in teaching tools,followed by a new atmosphere in modern classroom teaching mode.Science and technology drive the change of classroom teaching mode.Young and novice teachers are powerful promoters of scientific and technological innovation.The status of blackboard book teaching is gradually marginalized.High school chemistry classroom encounters a similar situation.However,taking history as a lesson and combining with the development of foreign education,the traditional blackboard teaching mode formed for many years has many advantages,and has made an important contribution to the progress of human education,which also determines that it can not be completely replaced.However,it is an indisputable fact that the modern classroom situation is that blackboard teaching no longer occupies the dominant position.Some chemistry teachers adopt the whole process of using electronic multimedia teaching,resulting in many unavoidable problems.The author intends to explore the advantages and disadvantages of the traditional blackboard teaching compared with the electronic multimedia whiteboard teaching.When choosing the two methods for teaching,we should fully understand that the whiteboard teaching can effectively create a learning environment,foster learning atmosphere,stimulate students'interest and encourage students to think;at the same time,we should fully grasp the clear and concise context of the blackboard book.Teachers should deal with the relationship between the two according to local conditions,so as to make full use of their strengths and avoid weaknesses,complement each other,and rationally allocate the time and space for the use of black and white boards according to the teaching content,so as to achieve the best teaching effect.High school chemistry classes are mainly divided into three types:new courses,experimental courses and exercises.For the new teaching,the introduction and teaching assistant exercises can be displayed by whiteboard,and the main teaching ideas and calculation process are suitable to be presented by blackboard book.For the experiment class,whiteboard can be projected to experiment which has great potential safety hazards,and blackboard can be used to perform experiment ideas similar to experimental reports.For review lessons,whiteboards show students'answers,summary and review of knowledge points,and blackboards follow up key knowledge points or calculation links.In a word,the ultimate goal of this study is to find out the strategies that can complement each other and integrate each other,so as to truly improve the effectiveness and efficiency of high school chemistry classroom.