Desarrollo del conocimiento para la ense？anza de la proporcionalidad en futuros profesores de primaria

this paper describes some outcomes of an educational process in a teacher mathematics education context. the main objective of the education process is to develop the mathematical knowledge necessary to teach at the elementary grade-level. this process involves: (a) the proportionality problem resolution, (b) analysis of the problem resolution using an epistemic analysis tool, and (c) prospective assessment of three types of sixth graders' responses to a proportionality problem. the results point out that the formative process fosters the development of mathematical knowledge for teaching. finally, some implications for prospective teacher education are discussed.