小学阶段几何初步知识的教学 ,不单纯是使学生获得有关图形的知识 ,更重要的是发展学生的空间观念 ,培养学生操作、识图的技能及抽象概括能力。多媒体以其图像清晰、动态感强、信息量大、交互灵活的优势 ,参与几何初步知识的教学 ,有利于优化课堂教学过程 ,提高课堂教学效率。 Primary elementary geometry teaching of primary knowledge, not simply to enable students to get the knowledge about graphics, more importantly, the development of students' space concept, training students skills, knowledge of the skills and abstraction ability. With the advantages of clear image, strong sense of motion, large amount of information and flexible interaction, multimedia participates in the teaching of elementary geometry knowledge, which helps to optimize the classroom teaching process and improve the efficiency of classroom teaching.