Downscaling and upscaling Fermi problems
Résumé
The introduction of modeling tasks in the first grades of primary school requires a deep reflection from the point of view of both the design and the implementation. In this paper we describe an empirical exploratory study developed with the objective of designing a sequence of modeling tasks focused on solving a big numbers estimation problem that, in origin, is inaccessible for students. The key to the design of our sequence is to use a technique that we have called downscaling - upscaling, inspired by heuristic strategies. So, by resizing the initial problem, 2nd grade students are able to tackle a problem that seemed very big using complex mathematical procedures.
Origine | Fichiers produits par l'(les) auteur(s) |
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