Teachers don't need to develop all the course contents.

The corresponding micro-courses should focus on the key points, difficulties and error-prone points, and try to be "small but precise"

With independence, integrity and demonstration, it can highlight the common, typical and representative problems or problems in teaching.

Ability can effectively solve the key and difficult points in the teaching process.

The language of the explanation should be standardized and clear, with a loud voice, a sense of rhythm and richness.

The power of dyeing, the main line of the teaching process is clear, simple, vivid, logical and enlightening.