课堂导入是小学数学教学中一个不可或缺的重要环节,是教学的前奏。一些好的课,往往能在短短几分钟就吸引住学生,激发学生的学习动机、充分调动学生的学习兴趣,又能渗透数学思想方法。《比例的意义》作为一节传统的概念课,研究过的教师当然不少。从收集到的教学设计资料来看,导入部分有多种不同的方式,归纳起来大体有四种,即复习导入、提问导入、激趣导入和解决问题导入。一、复习导入 The introduction of the classroom is an indispensable important part in elementary mathematics teaching, and a prelude to teaching. Some good lessons often attract students in just a few minutes, inspire students ’learning motivation, fully mobilize students’ interest in learning and infiltrate the mathematical thinking and methods. “The Meaning of Proportions” As a traditional concept course, there are of course many teachers studied. From the collection of teaching design information, there are a variety of different ways to import part, summed up in general there are four, namely, review import, import questions, interest import and solve problem import. First, review import