小学数学教学在经历了多轮改革之后进入了微课程时代。开启高效的课堂教学之门,一直是我们一线教师的期盼。而微课就是这样一种全新的教学资源,可以满足教师的各项教学需求,为学生呈现出一个精彩纷呈的网络课程世界,增强学习数学时的活力,使得学生感受到探究问题的乐趣,从而爱上数学。因此,如何运用微课这把钥匙开启高效的小学数学教学之门是我们值得探讨的问题。一、利用微课课前预习,有利于学生的前置性学习 Elementary mathematics teaching has entered the micro-curriculum era after many rounds of reforms. Open efficient classroom teaching has always been our teachers look forward to. The micro-class is such a new teaching resources to meet the teaching needs of teachers, showing a colorful world of online courses for students to enhance the vitality of learning mathematics, making students feel the fun of exploring the issue, which Fall in love with math Therefore, how to use the micro-class key to open the door to efficient primary school mathematics teaching is our question worth exploring. First, the use of micro-class pre-class preview, is conducive to the students of pre-learning