'The Hole in the Sky Causes Global Warming': A Case Study of Secondary School Students' Climate Change Alternative Conceptions

This study identified secondary school students' alternative conceptions (ACs) of climate change and their resistance to instruction. Using a case-based approach, a diagnostic test was administered to Secondary 3 male students in a pre-test and post-test. The ACs identified in the pre-test were on the causes of climate change, the natural greenhouse effect and its properties, the enhancement of the greenhouse effect, the elements involved in heat-trapping and their characteristics. There were also notable ACs on the effects of climate change, mostly on how the phenomenon is related to nonatmospheric events such as tsunami, earthquakes, acid rain and skin cancer. The students confuse the Montreal with the Kyoto Protocol as the primary treaty aimed at curbing greenhouse gas emissions. Whereas there was significant improvement in students' understanding in the post-test, the distribution of responses for each of the ACs showed that the reduction in erroneous responses was not sufficient to reject the ACs fully. The authors recommend that instruction should move beyond patchwork pedagogy to a more explicit acknowledgement, incorporation and direct refutation of misconceived knowledge structures.