Obstacle Analysis Of High School Students' Learning Trigonometric Function Under Core Literacy And Teaching Strategies

Trigonometric function,as a basic elementary function in senior high school,has always been the compulsory content of college entrance examination.However,there are many obstacles for senior high school students to learn trigonometric functions because of their complicated knowledge points,high requirements for logical thinking ability and flexible transformation of formulas.In addition,the knowledge system of mathematics core literacy is not perfect,and the study on learning obstacles of trigonometric function under core literacy is rare,due to the short-term initiation of Mathematics Curriculum Standard for Ordinary High Schools(2017 Edition).Therefore,as a front-line teacher,combining with teaching practice,it is of far-reaching and practical significance to deeply study the obstacles of learning trigonometric functions under the core literacy and the corresponding teaching strategies,and to go deep into the real teaching environment to fully understand the actual situation of students,so that teachers can adopt teaching strategies with confidence,improve teaching efficiency and promote students' mastery of trigonometric functions.Firstly,this paper analyzes the position and function of trigonometric function in senior high school mathematics learning stage,and expounds the concrete performance of six levels of core literacy.Then,through student survey,teacher interview and student test,it is concluded that the obstacles for students to learn trigonometric function are mainly the lack of logical reasoning ability and intuitive imagination ability.Starting from the knowledge points of trigonometric functions,the obstacles at the micro level are as follows:the concept of angle is not well grasped,the application of trigonometric identity transformation is not skilled,the range of angle is ignored,and the conversion from image to property is inflexible.Finally,according to the results of investigation and study,the formulation of teaching strategies for trigonometric functions should not only focus on students' existing knowledge base,cognitive level,attitude and habits,but also be basic,specific,uplifting and universal,and take into account the actual situation of schools and teachers.Finally,this paper puts forward corresponding strategies for the teaching of trigonometric functions for senior high school students from the aspects of teachers'cultivation of students' habitual interest,teaching methods and teaching concepts,and applies the teaching strategies to practical teaching practice.By comparing the differences between the students in the two classes through the control experiment,the feasibility and practical operation of the teaching strategy are obtained.