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Middle school students’ cognitive structures about global warming and ozone layer depletion
(Çanakkale Onsekiz Mart Üniversitesi, 2016) Pekel, Fikri; Taştan Kırık, Özgecan
This study aims to investigate students’ conceptual understanding about global warming and ozone layer depletion. The study was conducted with 50 middle school students in years 7 and 8. Initially, the students were instructed to make drawings, and then a Global Warming Questionnaire was implemented. Finally, semi-structured interviews were conducted with the students who were selected based on the answers they gave to the questionnaire. According to the result of the questionnaire, there was no significant difference between the grade levels. According to the results of content analysis of drawings, the students of both grade levels were found to have broadly similar conceptual understandings. The interviews indicated that, in both classes, common and different conceptual structures occurred. Also, it was revealed that the instruction given about these topics at science and technology course at 7th grade was not effective enough for the students to deal with alternative conceptions.