Data collection methods

1. Students' written diaries

2. Pre-observation interview

2.1. Factors affecting instructional decision in the planning

2.2. Planned curriculum in relation to the use of textbook

3. Lesson plan

4. Students' diaries

5. Reflective journal

6. Students' Interview

7. Textbook-use diaries

7.1. Interactive activities

8. Lesson observation

8.1. Enacted curriculum in relation to the use of textbooks

8.2. Effectiveness

9. Post-observation interview

9.1. Factors affecting instructional decision in the enacted curriculum

10. worksheet

11. Teachers' interview

11.1. Reflection in action

11.2. Reflection for action

11.2.1. Action

11.3. Reflection on action

11.4. Knowledge and beliefs

11.5. Perception of textbooks