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Tirosh, Dina; Tsamir, Pessia – International Journal of Science and Mathematics Education, 2022
In this article, we describe a case study that was conducted within a study aiming to diagnose grade 5 students' concept images of parallelograms. The theoretical framework that we adopted for this study was that of concept definition--concept image as reported by Tall and Vinner ("Educational Studies in Mathematics" 12:151-169, 1981), a…
Descriptors: Grade 5, Concept Formation, Geometric Concepts, Definitions