Causal structures and counter-intuitive experiments in electricity

This study focuses on the similarities and differences in structure and meaning between pupils’ conceptions about steady state tasks and evolutionary tasks, in which the system under study undergoes changes over time. A nine‐item written questionnaire was given to 197 Greek secondary school pupils. Results showed that the majority of pupils employ causal structures for their predictions. Two models were identified: a ‘give’ model, applied by pupils in steady‐state tasks; and a ‘take’ model, applied in evolutionary tasks. Structural similarities and semantic differences were identified between these models. In the light of these results, the study also examined the types of experiments in introductory electricity that would or would not obtain a counter‐intuitive reaction in pupils.

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