This study researched the use of metaphor among students and teachers to determine the images they had in their minds regarding a specific set of developed countries, and in doing so, utilized a longitudinal design carried out over four stages between November 2015 and November 2018 within a large metropolitan city in Turkey. The study findings…

In many situations, the change in the conceptual understanding of students is measured using a single question. This is, for instance, the case in peer instruction where students answer twice to the same questions, before and after the discussion phase. Using item response theory and assuming that students proficiencies are normally distributed,…