微课,是指运用信息技术按照认知规律,呈现碎片化学习内容、过程及扩展素材的结构化数字资源。小学数学微课自然是关于小学数学学习内容的微课。“微课”的核心组成内容是课堂教学视频(课例片段),同时还包含与该教学主题相关的教学设计、素材课件、教学反思、练习测试及学生反馈、教师点评等辅助性教学资源,它们以一定的组织关系和呈现方式共同“营造”了一个半结构化、主题式的资源单元应用“小环境”。因此,“微课”既有别于传统单一资源类型 Micro-class refers to the use of information technology in accordance with the law of cognition, showing fragmented learning content, process and expansion of the material structure of digital resources. Elementary mathematics micro-class is naturally on the primary school mathematics learning micro-class. The core component of “Microcosm” is the classroom teaching video (lesson fragment), and also includes teaching design, material courseware, teaching reflection, practice test and student feedback, and teacher reviews and other auxiliary teaching related to the teaching topic Resources, which in a certain organizational relationship and presentation of the common “create ” a semi-structured, thematic resources unit application “small environment ”. Therefore, “micro class ” is different from the traditional single resource type