The initial phase of the construction of proportional reasoning with students aged 12 to 13 is described. In the proposed problems the recourse to the constance of ratios originates as a strategy necessary to tackle the situaztions, in opposition to other resolutive strategies which are quite spontaneous but not really suitable. In refernce to costructivist perspectives, the main points of contact are underlined, with a particular enphasis on social constructivis.

Class discussion as an opportunity for proportional reasoning

PESCI, ANGELA
1998-01-01

Abstract

The initial phase of the construction of proportional reasoning with students aged 12 to 13 is described. In the proposed problems the recourse to the constance of ratios originates as a strategy necessary to tackle the situaztions, in opposition to other resolutive strategies which are quite spontaneous but not really suitable. In refernce to costructivist perspectives, the main points of contact are underlined, with a particular enphasis on social constructivis.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/129926
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact