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An onto-semiotic approach to geometrical reasoning and spatial visualization. (Razonamiento geométrico y visualización espacial desde el punto de vista ontosemiótico.) (Portuguese. English summary)
Bolema 26, No. 42A, 39-63 (2012).
Classification: C20
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Computers and mathematics teaching. Various ways of use. Ordenador y educacion matematica. Algunas modalidades de uso. Rechner und Mathematikunterricht. Verschiedene Anwendungsmoeglichkeiten. (Spanish)
Madrid: Editorial Sintesis. 1989. 175 p. Ser. Title: Matematicas: cultura y aprendizaje. no. 30. ISBN: 84-7738-029-5
Classification: U79
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