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Communication Dans Un Congrès Année : 2015

Exploring grade 9 students' assumption making when mathematizing

Résumé

Making assumptions is a key activity in modelling. The present study aims to explore the variety of assumptions that lower secondary students make in this process. As theoretical basis for the data analysis, we used the modelling cycle by Blum and Leiss (2007) and framed a definition of assumptions. The study was carried out with grade 9 students. The results show three categories of assumptions: (1) parameter assumptions, (2) assumptions for the choice of the mathematical model, and (3) assumptions about task expectations. Assumptions from the first two categories assist students to use extra-mathematical knowledge to construct a mathematical model, while the third category of assumptions can assist but also hinder them. Our study shows, that students were well aware of their assumption making.
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Dates et versions

hal-01287253 , version 1 (12-03-2016)

Identifiants

  • HAL Id : hal-01287253 , version 1

Citer

Brikena Djepaxhija, Pauline Vos, Anne Berit Fuglestad. Exploring grade 9 students' assumption making when mathematizing. CERME 9 - Ninth Congress of the European Society for Research in Mathematics Education, Charles University in Prague, Faculty of Education; ERME, Feb 2015, Prague, Czech Republic. pp.848-854. ⟨hal-01287253⟩
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