九年义务教育自然教学大纲指出：“自然是义务教育小学阶段的一门重要基础学科。自然学科“担负着学生进行科学启蒙教育的任务。”这就告诉我们，自然学科对于全面贯彻国家教育方针，使学生在德、智、体等方面全面发展，提高全民族的科学文化素质，培养“四有”人才，有着十分 The nine-year compulsory education natural syllabus states: “Nature is an important basic discipline in the elementary education of compulsory education, which undertakes the task of students in carrying out scientific enlightenment education. ”This tells us that natural sciences have very great practical significance in fully implementing the national education policy, enabling all-round development of students in moral, intellectual and physical aspects, raising the scientific and cultural qualities of all ethnic groups and cultivating“ four talents ”