A Research On Teaching Reform Practice Of "Trigonometry Reconstruction" In Junior High Schools

Junior high school mathematics education plays a very important role in the basic education.The new curriculum standard has aroused the debate on the reform of mathematics teaching in junior high schools.The educational idea of the junior high schools mathematics in our country still needs to be improved.Suggestions on the "trigonometry reconstruction" of junior high school teaching reform were propounded by Prof.Zhang Jingzhong.In recent years the "trigonometry reconstruction" of junior high schools mathematics reform was carried out small area practice in Guangzhou,Chengdu,Shanghai,Guizhou,Sichuan,Shenyang and other areas.In order to further promote the reform practice of the "trigonometry reconstruction",this thesis studied the current status of the teaching practice of "trigonometry reconstruction".This thesis mainly discusses the theory of the teaching reform practice of "trigonometry reconstruction".It analyses the background and need of the teaching reform of "trigonometry reconstruction" and summarizes some integration schemes of "trigonometry reconstruction" and its application in senior high school entrance examination mathematics.At the same time,the author studies the status of teaching practice of "trigonometry reconstruction" in junior high school between the city and the countryside.The research includes teacher's attitude towards the "trigonometry reconstruction",learning,training and teaching situation.The students' learning situation includes the emotional attitude,the understanding of "trigonometry reconstruction" content,learning performance and teaching effect.Finally,the thesis summarizes the results of the survey and gives some suggestions for the next stage of the practice of "trigonometry reconstruction".This study gets the following conclusions;81.8% students express their approval and preference for the teaching reform of "trigonometry reconstruction".It is thought that the content of "trigonometry reconstruction" embodies the coherence and integrity of knowledge and the new definition of sine is simple.There is no significant difference between the students' attitudes towards the teaching of "trigonometry reconstruction" and the understanding of the arrangement of the scheme.82.4% students have a good mastery of the knowledge of "trigonometry reconstruction",but they need to strengthen their knowledge application.Based on different levels of students learning performance and learning effect have significant difference,good learning ability level of students show better learning performance of "trigonometry reconstruction".It has more obvious influence on their achievement and problem-solving ability.The practice of teaching reform can improve students' ability of solving geometry problems,and at the same time enhance their interest and confidence in mathematics learning.On the other hand,the teaching reform of "trigonometry reconstruction" updates the teachers' teaching concept and improves their subject knowledge level.Aiming at the problems found in the survey,the author puts forward the following suggestions.To speed up the integration of "trigonometry reconstruction" teaching scheme using didactics further processes and polishes the integration of teaching materials to enhance interest and readability.The integration of teaching materials in urban areas and rural areas should supplement the teaching content according to the students' level.Too difficult and complex content such as Menelaus' Theorem,cotangent should not add in rural schools.Supporting more practice of "trigonometry reconstruction" by secondary exploration of existing problems to form a problem library with difficult gradients.Give play to the leading role of experienced teachers and train teachers from bottom to top and strengthen the application of "Super Sketchpad" platform.Pay attention to classroom teaching and the organization of teaching content to improve teaching efficiency.