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Internationally, students have difficulty interpreting and drawing conclusions from data. These skills are essential components of scientific reasoning, an ability that has been shown to correlate with conceptual change. Providing greater opportunities for students to engage in scientific practices such as modelling in order to collect and reason with data has the potential to improve scientific reasoning skills. However, in some subdisciplines of biology, such as population growth, data collection needs to occur over time scales that are unfeasible in a classroom setting. Computer-based simulations of biological phenomena are one way to overcome this limitation, but their effect on scientific reasoning has been under investigated. This study researched the effect on scientific reasoning of computer-based simulations in a context that employed a specific type of model-based reasoning (Modelling Instruction). Students who used computer-based simulations in a Modelling Instruction context showed increased scientific reasoning post-instruction compared to a comparison group. Moreover, shifts were observed in the intervention group towards more formal reasoning whereas no such change was observed with the comparison group. This result suggests that computer-based simulations should be further explored as a way to improve student scientific reasoning, particularly in contexts where laboratory investigations are not feasible.

Improving Students’ Performance through the Use of Simulations and Modeling: The Case of Population Growth