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Direct linkLiu, Chunhua; Carraher, David W.; Schliemann, Analúcia D.; Wagoner, Paul – Cognition and Instruction, 2017
In a 1-hour teaching interview, 20 children (aged 7 to 11) discovered how to tell whether objects might be made of the same material by using ratios of measures of weight and size. We examine progress in the children's reasoning about measurement and proportional relations, as well as design features of instruments, materials, and tasks crafted to…
Descriptors: Children, Preadolescents, Measurement, Cognitive Development
