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Chapitre d'ouvrage:
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Clé de citation BibTeX: Cortina2002
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Cortina, J. L. (2002). Developing instructional conjectres about how to support students' understanding of the arithmeti mean as a ratio. In B. Phillips (Ed.), Developing a statistically literate society: Proceedings of the Sixth International Conference on Teaching Statistics International Association for Statistical Education.
Ajoutée par: Lynda Taabane 2007-12-05 20:26:08 Dernièrement modifiée par: Lynda Taabane 2008-01-06 20:17:57
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Résumé
This paper develops insights into how to deal with the arithmetic mean in the initial phases of
statistics instruction. It focuses on one of the various ways in which the mean can be used in
statistics: as a normalized ratio. The paper analyzes individual interviews of 12 12-year-old
students prior to their participation in a classroom teaching experiment. These interviews were
used to test and develop instructional conjectures about how to support students’ understanding
of the mean and other normalized ratios. Three differences where detected in how students
seemed to make sense of proportional comparison problems in which the use of the mean as a
ratio is pertinent. The paper explains how these findings can be capitalized upon in designing and
conducting instruction.
Ajoutée par: Lynda Taabane Dernièrement modifiée par: Lynda Taabane
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Idées
pdf dispo
Ajoutée par: Lynda Taabane
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