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ERIC Number: EJ1046267
Record Type: Journal
Publication Date: 2015
Pages: 31
Abstractor: As Provided
ISSN: ISSN-0950-0693
From a Subtractive to Multiplicative Approach: A Concept-Driven Interactive Pathway on the Selective Absorption of Light
Viennot, Laurence; de Hosson, Cécile
International Journal of Science Education, v37 n1 p1-30 2015
This research documents the aims and the impact of a teaching experiment on how the absorption of light depends on the thickness of the absorbing medium. This teaching experiment is more specifically characterized as bringing to bear a "concept-driven interactive pathway". It is designed to make students analyse the absorption of light by a medium as a selective multiplication (i.e. one depending on the wavelength) of the intensity by a factor smaller than one. Six teaching interviews conducted with fourth-year university students were recorded, transcribed and coded. Their analysis led us to evaluate the importance of the main obstacle expected, that is, of restricting the interpretation of absorption/transmission phenomena to the idea of "less light", or, equivalently, of seeing a multiplication by a factor smaller than one as just a subtraction. The students' comments at the end of the interview introduce a discussion about the links between their intellectual satisfaction, critical attitude and comprehension of the topic.
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: France (Paris)
Grant or Contract Numbers: N/A