| Theme | Codes | Frequency |
| Language | Pronunciation | 2 |
| Teaching objectives | Teaching objectives, language points, cultural awareness, critical thinking, affective attitudes | 5 |
| Teaching content | Completeness of teaching content, listening skills, writing skills, grammar points | 4 |
| Teaching activity | Exercise, task, warming-up activity, game | 6 |
| The use of teaching tools | Picture, courseware, blackboard-writing, video | 9 |
| Teaching manner | Teaching manner | 3 |
| Interaction | Interaction, questioning | 3 |
| Others | Serious attitudes, class control, clarity of instruction | 3 |