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Direct linkJohnson, Philip – Research in Science Education, 2005
This paper is a reflection on a three-year longitudinal study that explored the development of children's concept of a substance, for which detailed results concerning children's understandings have been reported elsewhere. The attention in this paper is on the methodological features related to the longitudinal nature of the study and the…
Descriptors: Longitudinal Studies, Children, Concept Formation, Curriculum
