Table 4 The most used scientific methods
From: A bibliometric study on “education for sustainability”
Curriculum analysis or evaluation | 62.24 % |
Case study | 21.09 % |
Survey | 13.27 % |
Interview | 10.88 % |
Action research | 10.20 % |
Qualitative research | 8.84 % |
Delphi method | 4.42 % |
Content analysis | 3.06 % |