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Direct linkWidder, Mirela; Berman, Avi; Koichu, Boris – Journal for Research in Mathematics Education, 2019
Aiming to enhance understanding of visual obstacles inherent in two-dimensional (2-D) sketches used in high school spatial geometry instruction, we propose a measure of visual difficulty based on two attributes of the sketches: potentially misleading geometrical information (PMI) and potentially helpful geometrical information (PHI). The…
Descriptors: High School Students, Spatial Ability, Visual Perception, Geometry
