Modeling the control of variables in proportionality problems through finite automata: Two case studies
Modelado del control de variables en problemas de proporcionalidad a través de autómatas finitos: dos casos de estudio
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This paper presents the process of modeling how problem-solvers of different ages and educational levels control variables while solving a problem of proportionality in a situation of constant linear motion; the modelling is done with the Finite Deterministic Automata (FDA) technique. The cognitive ability of controlling variables is vital to the development of scientific reasoning, a necessary condition of modern education. The study aims to characterize and explain cognitive change when solving proportionality tasks delivered via an interactive software. To show the potential of the FDA technique, three cases are analyzed here along with the evidence of intersubjective variation in 130 problem-solvers, in terms of the frequency of transition toward different forms of variable controlling.
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