Research On The Teaching Practice Of Trigonometric Function In Senior High School Based On The Analysis Of College Entrance Examination Questions

With the continuous advancement of the new curriculum reform,Mathematics curriculum standards for senior high schools(2017 Edition)puts forward more comprehensive requirements for the teaching of trigonometric functions,and the high school mathematics textbooks are constantly optimized and revised.Trigonometric function is a necessary test point for the proposition of college entrance examination every year,occupy an important position in high school mathematics.Under the background of the new college entrance examination,the teaching and learning of trigonometric functions are constantly facing new tests,In order to improve the efficiency of trigonometric function teaching,this thesis studies the teaching strategy of trigonometric function based on the analysis of college entrance examination questions and the current situation of trigonometric function teaching and learning,combined with teaching practice.Firstly,through the method of literature analysis,this thesis summarizes the current situation of the teaching and research of trigonometric function,makes a statistical analysis on the trigonometric function problems in the national(II)college entrance examination in recent seven years,summarizes the proposition law of trigonometric function in the college entrance examination,and predicts the proposition trend in the future.Secondly,through the methods of teacher interview and questionnaire,this thesis investigates the current situation of trigonometric function teaching and learning from the perspective of teachers and students,and analyzes the data of the survey results.The results show that the current problems in trigonometric function teaching and learning mainly include the following points: 1 Some teachers are not proficient in the application of modern educational information technology;2.Some teachers do not have a thorough grasp of the knowledge context of the new textbook;3.Some students have obstacles in understanding the concepts of arbitrary angle and unit circle;4.Some students do not have a solid grasp of trigonometric function formula.Aiming at the problems existing in the teaching and learning of trigonometric function,this thesis puts forward the teaching strategies: 1.Reasonably design the learning guidance plan;2.Effectively connect the trigonometric function content of junior high school and senior high school;3.Rational use of modern educational information technology;4.Flexible application of inquiry teaching methods;5.Skillfully use pithy formula and mind map;6.Pay attention to the cultivation of mathematics core literacy.Finally,taking the first class of "properties and images of sinusoidal function" as an example,the teaching design is carried out,and the teaching practice research is carried out in two parallel classes of Tengao high school.The research results show that the rational use of the teaching strategy proposed in this thesis to carry out trigonometric function teaching can give full play to students' dominant position in the classroom,promote students' understanding and application of knowledge,and improve students' ability to analyze and solve problems.