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Haj-Yahya, Aehsan; Hershkowitz, Rina; Dreyfus, Tommy – Mathematics Education Research Journal, 2023
The current study is part of a comprehensive research on linking visualization, students' construction of geometrical concepts and their definitions, and students' ability to prove. The aim of the current study is to investigate the effect of learners' understanding of definitions of geometrical concepts on their understanding of the essence of…
Descriptors: Mathematical Logic, Validity, Geometry, Definitions