I. Definition of Micro-course Micro-course refers to the audio or video that explains a knowledge point in about five minutes by using multimedia technology based on the idea of instructional design. In education and teaching, the content of micro-teaching is punctate and fragmented. These knowledge points can be textbook interpretation, intensive topic description and induction of test sites. It can also be a knowledge explanation and display of skills such as method teaching and teaching experience. Micro-class is an effective supplementary form of classroom teaching. Micro-courses are not only suitable for knowledge dissemination in the era of mobile learning, but also for learners' personalized and deep learning needs. Second, the micro-lesson form Micro-lesson can be filmed and recorded by using camera equipment such as mobile phones, digital cameras and DV, and audio or video can also be recorded by using screen recording software such as Camtasia Studio, Screen2swf and screen video experts. Iii. When recording (1), adjust the computer resolution to 1024*768 and the number of color digits to 16. Ppt should be as concise and elegant as possible. (The file should be as small as possible to facilitate transmission) (2) The time must be strictly controlled at about five minutes. (3) The content is very fragmented and refined, so it should be thoroughly explained in five minutes, and don't generalize. If there are many contents, it is recommended to do a series of micro-courses. (d) When writing the content of micro-courses, based on the idea of instructional design, thoroughly enlighten and solve the doubts one by one. (5) Micro-courses must be accurate in content, words, pictures and language. (6) When the micro-lesson is explained, the voice is loud and cadence. The language is easy to understand, easy to understand, detailed and appropriate, and there is no audience language like you, everyone and classmates. (7) If courseware is used in the explanation, there will be visual beauty (it is suggested that ppt should be monochrome as much as possible, highlighting the beauty of simplicity and cleanliness). (8) The video quality is clear. (9) It is recommended to look at the teacher's head. In the PPT+ video recording mode, the avatar does not block the teaching content. (ten) to have the title and title, indicating the title, author, unit and other information. (1 1) The video formats are Flv and Mp4, and the video size is 640*480 or 320*240. Audio formats are: AAC (. AAC, .m4a and .f4a), MP3 and Vorbis (. Og and. oga)。