A longitudinal study of dynamics concepts

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Abstract
The development of dynamics concepts is studied longitudinally with two groups, one between ages 12‐14 and the other from 14‐16. Data collected includes performances on APS tasks (for which there is also national data) and performance on Piagetian tasks, with interviews on tasks for selected pupils. Classroom science curriculum data was also obtained. The study can thus discuss the interaction of cognitive development and classroom experience in the development of concepts. This particular paper focuses on the APS tasks.