“循环小数”是九年义务教育六年制小学数学第九册的内容。这部分内容对学生而言是一个全新的知识,概念较多,又比较抽象,是教学中的难点。在概念教学中,可从学生的生活实际入手,使学生感悟到数学来源于生活,从而提高学习兴趣,达到良好的教学效果。教学中应注意以下几点:(1)联系 “Cyclic decimals” is the ninth volume of nine-year compulsory education elementary school mathematics. This part of the content is a new knowledge of students, more concepts, but also more abstract, is the teaching of the difficulties. In concept teaching, students can start from the actual life, make students feel that mathematics comes from life, so as to enhance their interest in learning and achieve good teaching results. Teaching should note the following: (1) Contact