中国学生发展核心素养,以科学性、时代性和民族性为基本原则,以培养“全面发展的人”为核心,分为文化基础、自主发展、社会参与三个方面。文化是人存在的根和魂。文化基础,重在强调能习得人文、科学等各领域的知识和技能,掌握和运用人类优秀智慧成果,涵养内在精神,追求真善美的统一,发展成为有宽厚文化基础、有更高精神追求的人。在设计《圆的周长和圆周率》这一课时,我着眼文化基础这一方面来教学。【教学片段】 Chinese students develop core literacy. With the basic principles of science, the times and ethnicity as the core, they are divided into three basic areas: cultural basis, independent development and social participation. Culture is the root and soul of human existence. The cultural foundation emphasizes the acquisition of knowledge and skills in various fields such as the humanities and science, the mastery and application of outstanding human wisdom achievements, the cultivation of the inner spirit, the pursuit of the unity of truth, goodness and beauty, and the development of a generous base of culture with a higher spiritual pursuit people. In designing the lesson “Circumference of the Circles and Circles of the Circles”, I focused on the teaching of culture. Teaching fragment