A Strategic Research On The Teaching Mode Of Large Units In Senior Middle School Chemistry Review

In 2018,the Ministry of Education officially promulgated the "Chemistry Curriculum Standards for General High Schools(2017 Edition)",marking the official start of a new round of curriculum reform based on the cultivation of core literacy of disciplines with the goal of "cultivating morality and cultivating people".The chemistry review class redefines teaching goals according to the knowledge students have learned,determines a systematic knowledge network,promotes the structuring and systematization of knowledge,and makes students' cognitive level and values reach a higher level.important role in cultivation.Large unit teaching is the overall design and consideration of relevant teaching content,forming a teaching design with a complete knowledge structure and complete teaching significance.The application of the large unit teaching mode in the high school chemistry review class can help students form an overall knowledge view,enable students to build a complete knowledge framework,strengthen their understanding of the nature of knowledge,and improve students' ability to improve knowledge.Transfer and implement core competency training.First,through literature research,introduce the relevant background and significance of the topic selection,master the concepts and research status of large unit teaching and review courses,and combine investigation and interviews to master the current high school chemistry teachers' understanding of review courses and their views and views on large unit teaching.application.Secondly,relying on structuralist methodology,system theory and other theories,build a large-unit teaching model suitable for high school chemistry review courses,including five-link implementation procedures(determining teaching theme,clarifying teaching goals,activating the original knowledge experience,new knowledge acquisition and processing,evaluation and reflection);and the principles for the implementation of the large unit teaching model in the review course.On this basis,referring to the relevant literature and combining the characteristics of chemical knowledge,the compulsory and optional compulsory knowledge content of high school chemistry in the PEP version is classified,and the corresponding teaching strategies for large units in the review course are put forward.Based on the above research,the author conducted a four-month teaching practice.The trial review class adopts the large unit teaching mode,and the control class adopts the conventional review class teaching mode.By analyzing the pre-test and post-test results of the large-unit teaching,evaluating the students' teaching performance,the effectiveness of the large-unit teaching mode and the application of the strategies are compared and demonstrated.The results show that the application of the large unit teaching mode in the senior high school chemistry review class is helpful to the students' systematic mastery and transfer application of knowledge to a certain extent,which can effectively improve the review efficiency and cultivate the students' core literacy.