The Area Of A Plane Figure Teaching In Primary School

Plane geometry graphics can make the students feel the graphic beauty, to help students to understand the various kind of rich and colorful in real life, the formation of the concept of space. Graphic primary school stage of exposed to the area include:the area of a rectangle, square area, the area of a parallelogram, the area of a trapezoid, triangle area, the combination of graphics area, the area of a circle of the seven part. In "curriculum standard" classification content belongs to the "graphics and geometric" category, the area of a plane figure is "the key content in graphics and geometric". This part of the teaching objectives are:close contact with real life, through hands-on, the process of derivation to master a variety of graphic area formula, application of the formula correctly calculate the area of a plane figure, to solve the problems of life some simple about plane geometry graphics area, forming a from real life to mathematics knowledge back to the real life process. At the same time, the area of a plane figure learning is to learn the basis of three-dimensional graphics surface area and volume.About "the area of a plane figure" teaching has been closely watched by the teachers and teaching researchers, research about this content frequently appear in various journals, but so far, the area of primary school teaching of plane figure, in the knowledge of online can check out the thesis only Hangzhou Normal University Master’s thesis "of Shao Hong primary school mathematics" circle area "teaching research", Hangzhou University of Huang Jinrong’s master’s thesis "primary school mathematics" parallelogram area "method of teaching research" the two article.In this paper, primary school teaching around the area of a plane figure as the research content, in order to "curriculum standard" as the research basis, through literature research and case analysis as the research method, are reviewed in the present teaching situation characteristic we research status and domestic primary school students, development of foreign geometry teaching reform, teaching mode of thinking and the development of the area of a plane figure of the primary school. Secondly, the primary school stage touch line, angle, surface, body content of these geometric knowledge in each grade arrangements to do a simple description, do a simple definition of rectangular, square, parallelogram, trapezoid, triangle, circle and the name of each part. Once again introduces some teaching methods commonly used in the area of a plane figure teaching, teaching case analysis and reflection of teaching, its contents include:a brief history of the role of mathematics in "graphics and geometry" in the teaching, application of multimedia teaching means in the area of teaching, "patching" law concept elaboration and the area of a circle analysis and Reflection on teaching case, parallelogram area analysis and Reflection on the teaching cases, teaching cases and reflection of triangle area. Finally it introduces the open problems teaching of mathematics teaching in the related area of a plane figure and analysis of cases.