《用数对确定位置》是苏教版教材五年级下册内容,是将学生的生活经验——描述位置上升到用数学方法、用抽象的知识来确定位置,从而进一步发展学生的数学思考,引领学生建构空间观念。然而在实际教学中,教学内容的简单使定位于学生的问题解决、对于学生空间观念的培训缺乏有效引领,似乎成了数学教材中可有可无的“鸡肋”。在我看来,“用数对确定位置”是帮助学生构建空间观念的关键所在,是学生从形象思维向 “The number of pairs to determine the location” is the second edition of the textbook of the Soviet version of the textbook is to students ’life experience - description of the location up to mathematical methods, with abstract knowledge to determine the location, so as to further develop students’ mathematical thinking, Leading students to construct space concept. However, in the actual teaching, the simple teaching content is located in the students to solve the problem, the lack of effective guidance for the training of student space concept, seems to have become a math textbook indispensable “tasteless ”. In my opinion, “the number of pairs to determine the position ” is to help students build the concept of space, the key is that students from the image of thinking