练习是一种有目的、有组织的学习活动。小学数学课堂教学以练习为主线之一来促使学生掌握数学基本知识、基本技能和技巧;另一方面通过练习也进一步培养和发展学生的思维能力,因此,课堂练习的形式要讲求实效。一、设计分层练习,巩固深化例题教学例题教学是数学课堂教学的中心环节,是分层教学的关键所在。比如,苏教版三年级上册有这样一道例题:“每条裤子28 Exercise is a purposeful, organized learning activity. Primary mathematics classroom teaching to practice as one of the main line to promote students to master the basic knowledge of mathematics, basic skills and skills; the other hand, through practice also further develop and develop students’ thinking skills, therefore, the form of class practice should stress practical results. First, the design of stratified practice, consolidate the deepening example Teaching example teaching is the central link in the teaching of mathematics, the key lies in the hierarchical teaching. For example, the Sujiao version of the third grade there is such a book: ”Each pants 28