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TitlePortuguese primary school children’s conceptions about digestion : identification of learning obstacles
Author(s)Carvalho, Graça Simões de
Silva, Rui Manuel Correia da
Lima, Nelson
Coquet, Eduarda
Clément, Pierre
KeywordsChildren's conceptions
Learning obstacles
Primary school
Human digestion
Issue date16-Jul-2004
PublisherTaylor and Francis
JournalInternational Journal of Science Education
Citation"International Journal of Science Education". ISSN 0950-0693. 26:9 (2004) 1111-1130.
Abstract(s)A cross-sectional study of Portuguese primary school pupils' conceptions on digestion and the digestive tract was carried out before and after teaching this topic. Pupils of the prior four school years (5/6 to 9/10 year old) drew what happens to a cookie inside their body. In some cases they also wrote a short text or were interviewed. To identify their level of graphic development, they produced a free-hard drawing. The main conceptual changes in explaining digestion were strongly linked to teaching. Children’s previous conceptions were not epistemological obstacles to learning about digestion. The main obstacles were of didactical origin, as images of primary school books do not represent (i) the path of food from the intestine into the blood, (associated to the epistemological obstacle of the permeability of the gut wall); (ii) a clear continuous tract from stomach to anus, which causes a specific confusion at the intestine level.
Publisher version media/3pvxje0m5kckvg893t33/contributions/ 1/n/t/g/1ntgjy119nfr3kj3.pdf
AccessRestricted access (UMinho)
Appears in Collections:CIEC - Artigos (Papers)
DCILM - Artigos (Papers)

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