Practical Research On Lesson Presentation Of Mathematics In Senior High School

With the deepening of the reform of the new college entrance examination,China has put forward higher requirements on the professional quality of teachers,who should pay more attention to the development of their lifelong learning ability while teaching students basic knowledge.The activity of lesson presentation can help math teachers better understand the teaching materials,identify the learning situation,clarify their thinking,improve teaching skills,and effectively promote the professional development of teachers.However,there are still many problems in the teaching practice of senior high school.For this reason,this article has carried on certain exploration to "how to carry out mathematics lesson presentation activity efficiently".This paper is divided into six chapters.The first chapter introduces the research on background,status,significance and ideas of lesson presentation.The second chapter defines the theoretical basis and related concepts of lesson presentation.The third chapter adopts the form of questionnaire to investigate the present situation of lesson presentation from four dimensions: cognition of lesson presentation,preparation before lesson presentation,implementation of lesson presentation and reflection after lesson presentation.Combined with interviews with teachers,the present situation of lesson presentation is clarified and the factors restricting the development of lesson presentation are found.The fourth chapter puts forward the corresponding promotion strategy according to the restriction factors.The fifth chapter expounds the practice of lesson presentation,according to the promotion strategy and aiming for the mathematics class from three aspects of concept class,principle class and exercise class,constructs the suitable lesson presentation model of mathematics,and carries on the practice verification through three specific cases,all cases adopt the "Suggestive inquiry 252 Teaching model" of Luanchuan High School.The key of this paper lies in the strategy and the construction of lesson presentation mode.According to the restrictive factors,the solutions are put forward from four aspects.At the cognitive level,it can be improved from four aspects: grasping the principle of speaking,constructing the development mechanism,strengthening the theoretical knowledge and clarifying the evaluation standard.The level of lesson preparation is improved from three aspects: textbook analysis,learning situation analysis and teaching objectives.In the process of speaking class,language level and psychological level are promoted.After lecturing,we should pay attention to second lecturing,focus on core accomplishment and study the evaluation system of college entrance examination.Then according to the process of knowledge construction,the teaching mode of mathematics concept class,principle class and exercise class is discussed.The teaching design of mathematics concept class should include the following four links: creating situation,introducing concept;cooperative learning,forming concepts;example analysis,consolidate the concept;internalize introspection and apply concepts.The teaching design of mathematics principle course should include the following four links: creating the situation and introducing the new lesson;exploring formulas and constructing new knowledge;experimental exploration,rigorous proof;example exercises,deepen understanding.The lecture design of mathematics exercises after class should include the following four links: review and introduction;sample analysis;variable lifting;internalize introspection.The innovation of the thesis lies in the construction of an appropriate lesson presentation model from three levels of concept class,principle class and exercise class according to the process of knowledge formation,and it is applied to practice.Through the research,it is found that the lesson presentation activity of high school mathematics can strengthen the mutual communication between teachers,promote teachers to study relevant theories,improve teaching skills,promote teachers' professional development,and also have certain positive significance to create efficient mathematics classroom and improve teaching quality.Therefore,in the high school mathematics teaching,we should actively carry out the activity of lesson presentation of mathematics,and give full play to its advantages.