1.为学生搭建了自主学习的平台。对于当前大班教学来说,要在四十分钟一节课的有限时间内实现分层学习是比较困难的。而微课恰恰给不同层次的学生提供了自主学习的平台,既可以在课前为学有余力的优秀学生提供拓展的机会,又可以为困难学生扫清知识障碍。在观看微课的过程中,对于容易的内容或已经掌握的内容,学生可以选 1. For students to build a platform for independent learning. For current teaching in large classes, it is difficult to achieve a hierarchical study within a limited time of 40 minutes. The micro-class just to different levels of students with independent learning platform, both before the class to spare no effort to provide outstanding students to expand opportunities for students to clear knowledge barriers. In the process of watching the micro-class, for easy content or have mastered the content, students can choose