Study on the cognitive construction of the change of basis matrix in terms of APOS Theory
DOI:
https://doi.org/10.35763/aiem20.4011Keywords:
Genetic decomposition, reflexive abstraction, change of basis, linear algebraAbstract
This article shows the construction of the change of basis matrix in linear algebra. Based on the APOS theory as a theoretical and methodological framework, the structures and mental mechanisms are described to obtain a genetic decomposition based on the conceptions that students have about such a concept. A diagnostic test was applied to 28 undergraduate students (18-21 years of age). Semi-structured interviews were also conducted. The results show at least two trajectories in the construction of change of basis matrix concept, which differ in the internalization of mental actions.
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