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Waters, W. M. (1971). A study to test the effectiveness of a circular geoboard as an instrument for teaching selected arc-angle theorems. Retrieved from http://purl.flvc.org/fsu/fd/FSU_ahq0674
"The purpose of the study is to determine if there is a difference between students who study certain topics from plane geometry using a geoboard and those who study the same topics in the conventional classroom. A three part criterion test will be used as the evaluative instrument"--Introduction.
Waters, W. M. (1971). A study to test the effectiveness of a circular geoboard as an instrument for teaching selected arc-angle theorems. Retrieved from http://purl.flvc.org/fsu/fd/FSU_ahq0674