“懂而不会”现象在学生学习中普遍存在,也是师生饱受困扰的问题:为什么学生明明听得懂,想得明白,却经不起实践(作业、考试等)的检验?如何合理应对?笔者认为是教师的教与学生的学近乎两条平行线,没有实现真正意义上的交流,教与学的脱节、各自为战导致学生的懵懵懂懂(假懂),自然不能以不变应万变(真正意义上的“会”).因此在数学的教与学中,要注重夯实基础知识、领悟思想方法、强化 “Know but not ” phenomenon is ubiquitous in student learning, but also the teachers and students are plagued by problems: why students clearly understand, think clearly, but can not withstand the practice (homework, examinations, etc.) test? How to deal with it in a reasonable way? The author thinks that there are nearly two parallel lines between teacher’s teaching and students’ learning. There is no real communication, teaching and learning are detached. To change the status quo (in the true sense of the “will ”) Therefore, teaching and learning mathematics, we should lay stress on comprehending the basic knowledge, understanding and ways of thinking, strengthening