Investigation Methodology: Some Fundamental Questions and Answer

Brief research on some basic issues of methodology oriented educational research field. General answers are given to the significance of variables, the role of these and why they should be operationalized. It also talks about what a sample, which conditions should apply and what types exist. It also explains how the case study is, what conditions must be met and what steps contemplated. Finally, it explains what is triangulation. This is a concise but very interesting work, whose contents can be helpful to the student of Pedagogy and other branches of social sciences.