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Guven, Bulent; Baki, Adnan – International Journal of Mathematical Education in Science and Technology, 2010
This article presents an exploratory study aimed at the identification of students' levels of understanding in spherical geometry as van Hiele did for Euclidean geometry. To do this, we developed and implemented a spherical geometry course for student mathematics teachers. Six structured, "task-based interviews" were held with eight student…
Descriptors: Geometric Concepts, Mathematics Teachers, Geometry, Knowledge Level