小学数学练习课是以巩固数学基础知识,形成解题技能、技巧和培养学生运用所学知识解决实际问题为主要任务的课,它是小学数学课堂教学的主要课型之一,但在小学数学教学中,我们对练习课的研究远远不及新授课。传统意义上的练习课通常是一些简单习题的叠加,听了很不够味。而李彦璇老师的“万以内数的认识”这节练习课,却为我们奏响了一曲“轻负”与“高质”的和谐乐章。 Primary school mathematics practice class is to consolidate the basic knowledge of mathematics, the formation of problem-solving skills, skills and training students use the knowledge to solve practical problems as the main task of the class, it is one of the main class mathematics classroom teaching, but in primary school mathematics Teaching, we study the practice is far less than the new lectures. Traditionally the practice class is usually a simple superposition of exercises, listening is not enough flavor. The instructor Li Yanxuan’s “Less than one million knowledge ” practice class, but for us played a “light negative ” and “high-quality ” harmonious movement.