A School-based Study On High School Trigonometric Function Teaching Based On APOS Theory

During the period from 2017 to 2019,Huitong No.3 Middle School carried out the educational research project of "Trigonometric Function Classroom Teaching Effectiveness Survey".However,according to the teaching effect of the survey feedback from the Union No.3 Middle School,students’ mastery of trigonometric functions is not optimistic.So,how to improve the learning effect of trigonometric function in the teaching process so as to improve the students’ core literacy of mathematics? The author consulted some theoretical materials and found that many teachers use APOS theory to guide concept teaching and achieved certain results,so the author tried to use APOS theory to conduct school-based research on trigonometric function teaching in Huitong No.3 Middle School.Through this research,the application results of APOS theory in trigonometric function teaching are increased,and some teaching suggestions are given.This study chooses the ordinary class of the same third middle school as the research object.The idea of this school-based study is to investigate and study the current situation of trigonometric function teaching in high school,find the problems in teaching,and then design the teaching in combination with the APOS theory.The teaching design is directly used in the teaching activities of ordinary classes in our school for experimental research.The research content of this article is divided into the following points: First,consult the literature to understand the APOS theory,the origin and development of trigonometry.Second,through investigation and research,we can understand the students’ understanding of trigonometric functions and analyze the difficulties that students have in learning trigonometric functions,so as to get some teaching enlightenment.Third,under the guidance of APOS theory,the teaching design of trigonometric functions.Fourth,set up control classes and experimental classes,use teaching design under the guidance of APOS theory,and implement teaching for experimental research.Fifth,reflect on and summarize the conclusions and deficiencies of this research,so as to propose teaching suggestions for trigonometric functions.