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Sáenz-Ludlow, Adalira; Athanasopoulou, Anna – North American Chapter of the International Group for the Psychology of Mathematics Education, 2016
The paper focuses on student-teachers' geometric diagrams to mediate the emergence of different proofs for a geometric proposition. For Peirce, a diagram is an icon that explicitly and implicitly represents the deep structural relations among the parts of the object that it stands for. Geometric diagrams can be seen as epistemological tools to…
Descriptors: Student Teachers, Abstract Reasoning, Spatial Ability, Mathematical Logic
Lord, Thomas R. – 1988
This study was designed to determine if the final grade in college biology at a suburban community college was a true measure of student's knowledge. One hundred and seventy undergraduates taking a semester course in biology took part in the study. This population was randomly separated into a control, placebo, and experimental group. The progress…
Descriptors: Academic Achievement, Biology, College Science, Community Colleges