Micro-course is a short and pithy digital micro-learning resource. Its external characteristics are short and pithy, and its internal characteristics are selected content, fine design, exquisite explanation and excellent production. Therefore, when choosing a topic, we should focus on the four core points of teaching: key points, difficulties, doubts and hot spots. In other words, it is not the key content, so don't choose it. Instead, we should choose topics that are easy to test and make mistakes, or key and difficult points that students can't grasp in classroom learning. Calculation teaching such as "Decimal divided by Decimal" and "Calculation method of cuboid edge sum". Secondly, the micro-lesson takes video as the carrier and presents and expresses information with continuous dynamic pictures. Therefore, a good topic selection of micro-course should make full use of the communication advantages of video media, be good at using images and sounds to spread teaching content, and give full play to the advantages and functions of micro-course. For example, the volume calculation of cone, the understanding of axisymmetric figure, etc. These topics are all of high use value.

Second, carefully design the teaching process.

A micro-lesson is usually between 5 and 10 minutes. Due to time constraints, the content of micro-courses is definitely limited. Therefore, when designing micro-courses, we should simply and directly cut into the theme. The design of important and difficult points should also be clear and intuitive, so that students can quickly master some knowledge through 5 to 10 minutes of study; The summary meeting will be concise and to the point, with an outline. For example, understand the design of an axisymmetric figure as follows:

The first part is exciting, revealing the theme: showing a group of pictures with beautifully made axisymmetric graphics, all of which have a common feature: axisymmetric graphics. It takes about 40 seconds.

The second part, around the goal, puts forward questions to guide gradually, causes thinking, and summarizes: how to judge whether a graph is axisymmetric. It will take about 4 minutes.

Link 3: Review and summarize teaching, raise new questions and trigger new thinking and action. It takes about 30 seconds.

Third, the video is clear.

Video recording directly affects the listener's interest in learning, so in the process of recording video, the picture should be clear and the sound should be beautiful. If the teacher should pay special attention to the speed and intonation, the sound quality will also affect the mood of watching micro-classes. Look at the camera properly and make eye contact with the audience; In the process of teaching, teachers can make full use of the drag and click of the mouse to explain, and can also use the brush function appropriately to highlight the key and difficult points of teaching.

As a new teaching resource from the beginning, micro-course has been gradually applied to primary and secondary schools with the deepening of practice and research in China, and will have a very broad educational application prospect. For teachers, mastering the skills of making micro-courses, fully tapping the advantages of micro-course resources and applying them to their own teaching can also effectively promote teachers' professional growth.