Alcune osservazioni su una regola algebrica

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Abstract

[automatically translated] This paper wants to collect initial critical observations of a different nature about the algebraic rule of signs that (-x) (- y) = xy for all x, y in Z. briefly Reviewing his history, of this rule will be possible to provide some possible justifications physical and physical-mathematical, situate it in the general context epistemological and raffrontarla critically with other formal schemes, then envisage any educational implications.
Original languageItalian
Pages (from-to)1-14
Number of pages14
JournalQUADERNI DI RICERCA IN DIDATTICA
Volume23
Publication statusPublished - 2013

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