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http://dx.doi.org/10.14697/jkase.2006.26.3.406

Context-dependency of Students' Conceptions in Optics: Focused on Vision & Mirror Image  

Kwon, Gyeong-Pil (Seoul National University)
Bang, So-Yoon (Seoul National University)
Lee, Sung-Muk (Seoul National University)
Lee, Gyoung-Ho (Seoul National University)
Publication Information
Journal of The Korean Association For Science Education / v.26, no.3, 2006 , pp. 406-414 More about this Journal
Abstract
This study investigated 7th grade students' context dependency on explanations about propagating path of light in three different contextual problems: observation of an object, observation of an object's image in a mirror, and observation of one's own face reflection in a mirror. Researchers examined student response in each context through interviews. The students were classified into four groups according to their explanations for the three different contexts. Each group was redivided into two or three subgroups in accordance with their conceptual features. After that, researchers investigated the characteristics of each subgroup. Main findings of the study indicated that (1) group 1 students' conceptions differed in each context; (2) group 2 students showed scientific conceptions in C1 context but in C2 context they showed visual ray conceptions or image misconceptions; (3) group 3 students did not show scientific conceptions in C3 context by strong misconceptions about one's own face reflection in the mirror. Also, this paper discussed the educational implications of the results.
Keywords
propagating path of light; vision; mirror image; context-dependency; students' conception;
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