“懂而不会,一错再错”是数学学习中普遍存在的一种现象.学生也常常抱怨:“课堂上都能听懂,课后却不会做,听老师一讲,非常简单,好像什么都会.”“懂而不会”现象的出现,一方面原因在于学生,学生只满足于数学知识的表象学习,没有真正理解其内涵,缺乏思维的变通性;另一方面原因在于教师,教师是学生学习的领路人,教师在平时教学中要放下架子,站在学生的角度设计问题,引导学生深入探究.数学的知识点是不变的,而数 Students often complain: "Class can understand, after class will not do, listen to the teacher to talk about, The reason is that students and students are only satisfied with the representation of mathematical knowledge and do not really understand its meaning and lack the flexibility of thinking. On the one hand, the reason is that teachers and teachers are the leaders in student learning. Teachers should lay down their shelves during normal teaching and design problems from the perspective of students to guide students to explore in depth. The knowledge of mathematics is constant,