在教学苏教版第十册《确定位置》的课堂上,老师让符合数对(4,X)的学生站起来,第4列的所有学生都站起来。课后评课,有老师认为数对只能指一个点,(4,X)只能指一个学生,第4列的所有学生都站起来是不对的。那么,(4,X)是指一个学生还是指一列学生呢?1.“数对”是坐标的初级概念。二年级学习确定位置,是用文字表述(第几排第几个);现在五年级学习确定位置,是用“数对”表述;以后 In the teaching of the 10th edition of the Supranational version of “Determine Position”, the teacher stood up the students who matched the number pairs (4, X) and all the students in the 4th column stood up. After class evaluation, some teachers think the number pairs can only refer to one point, (4, X) can only refer to one student, all students in the fourth column are not right. So, (4, X) refers to a student or a list of students? 1. “Number pairs” is the primary concept of coordinates. Second grade learning to determine the location, is the use of text (the first few rows); now fifth-grade learning to determine the location, is the “number pairs” expression; later