Horizontal and vertical concept transitions. (English)
Paditz, Ludwig (ed.) et al., Proceedings of the 11th international conference of The Mathematics Education into the 21st Century Project ‒ MEC 21: On turning dreams into reality. Transformations and paradigm shifts in mathematics education, Grahamstown, South Africa, September 11‒17, 2011. Grahamstown: The Mathematics Education into the 21st Century Project ‒ MEC 21 (ISBN 83-919465-0-9/pbk). 133-136 (2011).
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Constructing a genetic decomposition: theoretical analysis of the linear transformation concept. (Construcción de una descomposición genética: análisis teórico del concepto transformación lineal.) (Spanish)
Relime 13, No. 1, 89-112 (2010).
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Integrating learning theories and application-based modules in teaching linear algebra. (English)
Linear Algebra Appl. 432, No. 8, 2089-2099 (2010).
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