试题的有效性主要是指,考察目标与解题方法之间的有效连接,以及学生的现有水平得到有效提升的导向作用.因此,试题设计的有效性对数学教学起着重要的作用.下面就两道中考试题谈谈如何保证试题的有效性.1.把握考察目标与解题思路之间的有效连接 The validity of the test questions mainly refers to the effective connection between the target of study and the problem-solving method and the effective promotion of the student's current level.Therefore, the validity of the test questions design plays an important role in math teaching. Talk about how to ensure the validity of the test questions on two middle school entrance exam questions .1. Grasp the effective connection between the goal of study and the solution