Typical. One or several difficult problems contained in teaching cases, as well as the methods and ideas to solve these problems, are the hot spots and focuses of teachers' common concern, which are highly representative, embody the unity of teaching phenomena and essence, individuality and commonness, and are typical examples of revealing the inherent laws of teaching, from which we can sum up conclusions with universal significance and better guide teaching practice.
Innovation. Basic education is in a new era of changing teaching ideas, changing teachers' roles, changing teaching methods and promoting curriculum reform. Teaching cases should reflect the new situation, new problems, new ideas, new methods, new changes and new achievements of curriculum reform, and reveal the new characteristics and new trends of teaching reform, so as to inspire people to explore new ideas and strategies and promote the healthy and in-depth development of curriculum reform.
Practicality. Teaching cases should be clearly described with plots, concise and vivid language, plain and intriguing content and strong readability. They should have practical significance, reference value and discussion value, which can cause teachers to follow suit and learn how to deal with similar things, inspire teachers to think, draw useful teaching ideas and lessons from them, and promote the continuous improvement of teachers' professional level.
Good teaching cases are story-telling, readable and operable, typical and unique, and have certain practical application value and theoretical research value in teaching ideas, teaching means, teaching methods and teaching principles.