苏教版义务教育小学数学课程标准实验教材中新增设的“你知道吗”是数学教学的重要内容之一,数量多,内容丰富,具有典型性和高度的概括性:有介绍数学知识方面的;有介绍社会和生活常识、自然知识等方面的;有数学史话或专门介绍某个领域、某种方面的发展过程的;有跨学科介绍最新研究成果的;有反映祖国建设成就的……。呈现方式生动活泼、图文并茂,都与教学内容紧密结合,是激发学生学习兴趣、拓展知识面、提高学习能力、培养爱国主义思想情感的好 The newly added “Do you know?”, One of the important contents of mathematics teaching, is a new content in the experimental teaching materials of the mathematics curriculum of the primary education of the compulsory education of the Sujiao Edition. It is a large quantity, rich in content, typical and highly generalized: Knowledge of; Introduction of social and common sense of life, natural knowledge, etc.; Have a history of mathematics or devoted to a particular area, a certain aspect of the development process; Interdisciplinary introduction of the latest research results; Reflect the achievements of the motherland’s construction .... Vivid and vivid presentation, illustrations, are closely integrated with the teaching content is to stimulate students interest in learning, expanding knowledge, improve learning ability, cultivate the emotion of patriotism is good