Portuguese primary school children's conceptions about digestion: identification of learning obstacles

Author: Carvalho Graça   Silva Rui   Lima Nelson   Coquet Eduarda   Clément Pierre  

Publisher: Routledge Ltd

ISSN: 1464-5289

Source: International Journal of Science Education, Vol.26, Iss.9, 2004-07, pp. : 1111-1130

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Abstract