A Study On The Teaching Of "Three - Dimensional Geometry" In Pre - Service Mathematics Teachers

After the new curriculum, there are many changes in the content of the "Three-dimensionalgeometrypreliminary"."Three-dimensional geometry preliminary" as the basis and the beginning of learning dimensional geometry, it has a very important position, three view portion as the new chapter is the hot spot and difficulty. But there ferenceis less, many teachers have encountered difficulties in teaching it. Pre-service teachers will step into the workplace, the understanding of the knowledge will be studied and explored. Base on the results of previous studies, I investigated the mastery and the need about "Three-dimensional geometry preliminary" of the pre-service teachers and conducted a detailed analysis, I hope to provide some help for pre-service teachers about teaching "three-dimensional geometric preliminary".Firstly, I carried out a survey of pre-service teachers’need and knowledge about teaching "three-dimensional geometric preliminary" and found that pre-service teachers has following problems in this regard.(1)There is not enough teaching skills for pre-service teachers about "three-dimensional geometric preliminary".Many of the pre-service teachers are not skilled to use oblique two measure method to draw a simple geometry.(2)Many of the pre-service teachers are still unfamiliar to individual content about "three-dimensional geometric preliminary" in new curriculum.(3)Most pre-service teachers believe that it has great improvement about Three views.(4)many pre-service teachers think that Three views restore physical map and three views are difficult in teaching, especially the Three views restore physical map.(5)Pre-service teachers are very concerned about the students’ interest in learning, which reflects that the idea of student-centered.(6)Pre-service teachers think that lacking of multimedia technology guidance and curriculum resources is the most difficulty and hope that classroom teachers can demonstrate their own.Secondly, there is a detailed understanding about migration of learning, I found teaching of motivation to study, with which I analyze the "three-dimensional geometric preliminary" according examples. I analysis and discussion hours arrangements, teaching objectives, teaching content and requirements of the "three-dimensional geometric preliminary". I think that arrangements of the teaching material are very rationality.Thirdly, according the investigation of pre-service teachers and analysis of curriculum content, we found that three views are the difficulty and focus of teaching requirements and pre-service teachers. We also provide some suggestions for teaching the three views of simple combination and the three views restore physical map, including three-view drawing method, the method sand priorities to see three views, analysis examples Etc.Finally, inference the previous data and literature, then present the teaching cases of three views, including preparation before class, draw forth according example, teach the content of three view, exercise example in classroom, summarize and expand extracurricular learning.