1. Qualitative research approach
1. Historical research involved with the study of past events

2. Qualitative research approach
Some examples of historical research studies.
1. Factors leading to the development and growth of cooperative learning
2. Effects of the implementation of nine-year compulsory education on economy
3. Trends in reading instruction,

3. Qualitative research approach
2. Qualitative research involved in the study of current events rather than past events. It involves the collection of extensive narrative data (non-numerical data)

4. Qualitative research approach
Participant observation where the researcher lives with the subjects being observed is frequently used in qualitative research. Case studies are also used in qualitative research.