中招考试是义务教育阶段的终结性考试,目的是全面、准确地评估初中毕业生在数学学习目标方面达到的水平.考试的结果既是确定学生是否达到义务教育阶段数学学科毕业标准的主要依据,也是高一级学校招生的主要依据之一,考试具有选拔功能.试题中往往设置一些综合性题目,这些题目常作为中招题的压轴题,甚至成为能否进入重点高中的关卡,这些题目的教学也就成为初中数学教学的难点.很多教师在教学中只告诉了学生怎么做题,而为什么这么做说不清 The middle entrance exam is the final exam in the compulsory education phase. The purpose is to fully and accurately assess the attainment of junior high school graduates in terms of mathematics learning goals. The results of the exam are both the primary basis for determining whether students meet the graduation criteria for the mathematics subject at the compulsory education stage. It is also one of the main basis for enrollment at a high school level. The examination has a selection function. The test questions are often set up with a number of comprehensive topics. These topics are often used as the final topic of the middle school, and even become a checkpoint for key high schools. Teaching has become a difficult point in mathematics teaching in junior high schools. Many teachers only teach students how to do questions in teaching, and why do they say so clearly?