“两条直线的交点坐标”是人教A版《数学2》(必修)的内容,涉及知识不多,而且学生容易理解,这种简单内容教师往往是点到为止,学生就配合练习。但一次偶然追问引发的探究,让笔者难以忘怀,竞有意想不到之效。1隐性运算探究有玄机教师:同学们,解决两条直线的交点问题,会吗?学生:会! “The coordinates of the intersection of two lines ” is the content of “A math 2” (compulsory) taught by the teacher of version A, involving little knowledge, and the students can easily understand that such simple content teachers often point to the end of the students with the practice . However, the inquiry caused by a chance to explore, so I unforgettable, competing for unexpected results. 1 Tacit computing to explore a mystery Teacher: Students, to solve the intersection of two straight lines, will it? Student: Yes!