As the carrier of Knowledge in clas

As the carrier of Knowledge in classroom teaching, micro-class plays an important role. The teaching design of Mathematics micro-course in high school should absorb the essence of traditional teaching design and discard the DROSS. The Times are changing, and teachers'educational concepts should also be changed. The instructional design of micro-lessons under the classroom needs to be designed differently according to their teaching purposes and the specific conditions of students, we should focus on the short time, small and precise content of micro-video (a key point, difficult point, doubtful point, test point of teaching) , take into account the advantages of traditional teaching design, to integrate the teaching course resources into a systematic process. High School Math micro-class should be based on the teacher's teaching of a key, difficult or error-prone points of knowledge to produce online video, for students, class or after-school use of less than 10 minutes of a resource.