Resumen

CONCEICAO, Joana  y  RODRIGUES, Margarida. First-grade students' strategies for 2D/3D transformations. Psicol. pesq. [online]. 2020, vol.14, n.2, pp. 112-129. ISSN 1982-1247.  http://dx.doi.org/10.34019/1982-1247.2020.v14.27595.

In this paper, we aim to understand which relationships between components, compounds and the whole do 1st grade students use to transform two-dimensional representations into three-dimensional constructions. We focus our analysis on the strategies used by two students during a task involving the dynamic relationship between 2D and 3D. Data were collected during the first set of tasks from the cycle 1 of an ongoing design-based research. Results show that students can establish relationships between the components, squares, and the whole, the box, using mental movements to transform two-dimensional constructions into three-dimensional constructions. Collective discussions seem to contribute to a collaborative construction of mathematical knowledge and to the shift from representations using physical models to mental models.

Palabras clave : Spatial Structuring; Connection 2D/3D; Mental Rotation; Primary Grades.

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