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Strand-Cary, Mari; Klahr, David – Cognitive Development, 2008
We explore the immediate and longer term consequences of different types of instruction about a central topic in middle school science: the "Control of Variables Strategy" (CVS). CVS represents the procedural and conceptual basis for designing simple, unconfounded experiments, such that unambiguous causal inferences can be made. CVS…
Descriptors: Outcomes of Education, Longitudinal Studies, Elementary School Science, Science Achievement

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