As the foundation of higher mathematics,the variable thought embodied in the function is a milestone for the development.This line also extends to higher education in universities.Different majors,although there are different courses for students,but function is always the main line of these advanced mathematics knowledge.The high school function is every student compulsory mathematics knowledge,its thinking permeates each mathematics branch.Through functions and equations,functions and inequalities,functions and sequences,functions and linear programming,etc.Functional knowledge connects the entire high school math curriculum.The main line of trigonometry teaching has changed from trigonometry.The main position of trig function is highlighted.The role positioning has changed,from the discussion of some side Angle relations in the triangle,trig function as a supporting role,to the trig function the protagonist of the trig content.In short,the content of trigonometry restores the true nature of trigonometric function,original clear source,cut down to simplify,highlight the theme.It greatly expands the application space of trigonometric functions,and plays a greater role in developing students’ thoughts and cultivating their abilities.On the content of the trigonometric function set some change,these changes for teachers’ teaching and teaching evaluation are brought a big challenge.I write a thesis is aimed at by trigonometric function,the change of material content mainly include content structure,content requirement and content difficulty.Through comparative study,it is found that trigonometric function knowledge is presented in the form of function main line,which strengthens the connection of junior and senior high school knowledge.In terms of content requirements,procedural knowledge increases while operational knowledge decreases;trigonometric functions are easier to do. |