Abstract:
Critical thinking is one of the most popular concepts studied in the field of education. In this study, the changes in pre-service science teachers' critical thinking disposition levels were studied according to the grade levels. Participants (60 pre-service science teachers) of the study were selected purposely and "The California Critical Thinking Disposition Inventory (CCTDI)" was applied them twice. CCTDI was first applied in October 2008 and the second time it was applied again in October 2010. According to results of the study; while the pre-service science teachers' critical thinking disposition levels decreased, their cumulative grand point averages (CGPA) increased over the years.
