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Geometrical representations in the learning of two-variable functions
2009
Educational Studies in Mathematics
This study is part of a project concerned with the analysis of how students work with two-variable functions. This is of fundamental importance given the role of multivariable functions in mathematics and its applications. The portion of the project we report here concentrates on investigating the relationship between students' notion of subsets of Cartesian three-dimensional space and the understanding of graphs of twovariable functions. APOS theory and Duval's theory of semiotic
doi:10.1007/s10649-009-9201-5
fatcat:26n2olvxovggxktcqodiedwk3m