Uso de puntos de referencia y de representaciones gráficas para resolver tareas numéricas en secundaria

  1. Almeida, Rut 1
  2. Bruno, Alicia 1
  1. 1 Universidad de La Laguna
    info

    Universidad de La Laguna

    San Cristobal de La Laguna, España

    ROR https://ror.org/01r9z8p25

Journal:
PNA: Revista de investigación en didáctica de la matemática

ISSN: 1887-3987

Year of publication: 2016

Volume: 10

Issue: 3

Pages: 191-217

Type: Article

DOI: 10.30827/PNA.V10I3.6088 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

More publications in: PNA: Revista de investigación en didáctica de la matemática

Abstract

In this paper we reflect on two components of number sense: The use of benchmarks and the use of graphical representation to estimate amount or the result of a calculation (with whole numbers, decimals and fractions). The results of a written test answered by 47 high school students are presented, in whose analysis the success and the strategies were examined. Results indicate difficulties for students when making use of numerical benchmarks and for building their own graphical representations, preferring rule based methods. Better results were obtained in numerical estimate from graphs already given. The lowest test results correspond to tasks in which fractions are involved.

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Funding information

Este trabajo forma parte del proyecto EDU2011-29324: Modelos de competencia formal y cognitiva en pensamiento numérico y algebraico de estudiantes de primaria, de secundaria y de profesorado de primaria en formación. Ministerio de Ciencias e Innovación, Madrid.

Funders

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