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Download full textDvora, Tali; Dreyfus, Tommy – International Group for the Psychology of Mathematics Education, 2004
We investigated unjustified assumptions made by students when proving geometric statements. Geometric statements can be presented with a diagram or without. Diagrams can be accurate or sketchy. Unjustified assumptions may originate in an accompanying diagram. We thus asked whether the way in which a statement is presented has an effect on…
Descriptors: Geometric Concepts, Task Analysis, Questionnaires, Interviews
