A Comparative Study On The Content Of "Graphics And Geometry" In Primary School Mathematics Textbooks

Under the guidance of the curriculum standards,different versions of the textbook in the"graphics and geometry" in the field of content is different.Therefore,this article selected the human education version and the Beijing Normal University primary school mathematics textbook,through counting statistical knowledge points and each knowledge points corresponding to the course time and content depth,using the course difficulty model" N?a·S/T+(1-a)·G/T" and calculating the difficulty of the content to arrive at a set of textbooks whose difficulty approaches the curriculum standards.Through comparative analysis,concluding that:(1)Both versions of the textbook content difficulty are to meet the requirements of the curriculum standards and are higher than the curriculum standards,Beijing Normal University version of the textbook is the most difficult,the People Education Press textbook is slightly smaller than the Beijing Normal University Edition,so closer to the curriculum standards;(2)In the part of "figure understanding",the difficulty of Beijing Normal University textbook and People Education Press textbook is close to the curriculum standards,and more difficult than the curriculum standards,but the difficulty of People Education Press textbook is greater;(3)In the "measurement"?"graphics and location" and "graphics movement" section,The difficulty of Beijing Normal University Edition and the People Education Press textbook is greater than the difficulty of the curriculum standards,but the content difficulty of the Beijing Normal University textbook is much more difficulty,therefore,the difficulty of the People Education Press textbook is much closer to the curriculum standards.For the conclusions,the recommendations are as follows:Increasing in the course time of the textbooks appropriately to reduce the overall difficulty of the textbooks.The People Education Press textbook should increase the target requirement of knowledge points in order to deepen the content depth.In the part of "understanding of graphics" and "graphics and location",the Beijing Normal University textbook should to increase the target requirements to deepen the depth of content.