1. definition of micro-lesson: "micro-lesson" refers to a teaching method with clear objectives, strong pertinence and short teaching time, which focuses on a single teaching task such as a certain knowledge point (key point, difficulty and doubt) or skill in the process of education and teaching inside and outside the classroom.

2. The standard of a good micro-course: 1. Simple and exquisite; 2. Reflect the teaching theme; 3. Strong interest (attracting students) 4. The perfect combination of technology and knowledge.

3. Micro-course technical support: Take Deshengzhi class as an example: 1. Provide various forms of micro-lesson solutions to meet different needs; 2. Advanced instruments and equipment, support high-definition video courseware, and be able to interact with teachers; 3. Complete post-production team, supporting video editing and packaging design.