“预习”是一个老生常谈的话题。从心理学角度看,预习是一种学习的心理准备过程,中国有句古话“凡事预则立,不预则废”就强调了做事有准备的重要性,在小学数学教学中,培养学生预习习惯和提高预习能力至关重要。预习在教学中的作用,从笔者大量的阅读分析来看,有如下几个观点:数学知识的特性决定了课前预习是必不可少的,此为赞同观点。预习削减学生对知识的新鲜感,不利于学生思维的发展,此为 “Preview ” is a commonplace topic. From a psychological point of view, pre-study is a learning psychology preparation process. There is an old saying in China that “everything should be based on preconditions and no prejudices” emphasizes the importance of being prepared for doing things. In elementary mathematics teaching, Student preparation habits and improve preparation skills is essential. The role of preview in teaching, reading a lot from the author's point of view, the following points: The characteristics of mathematical knowledge determine the pre-class preview is essential, this is agree with the point of view. Pre-cut students to reduce the fresh knowledge, is not conducive to the development of student thinking, this is