Abstract
This study documents the development of a Framework (the Dynamic Geometry Task Analysis Framework) to be used to indicate the relative quality of tasks produced for dynamic geometry software. Its purpose is to assist curriculum writers and teachers in evaluating and creating dynamic geometry tasks. To produce it, numerous tasks submitted by secondary mathematics teachers as part of a year-long professional development program were analyzed, before creating three dynamic geometry mathematics tasks that, according to the Framework, were ranked as low, medium and high in quality. Semi-structured interviews with twelve high school students were conducted and analyzed to examine relationships between the quality of tasks as specified by the Framework and the quality of student argumentation. Results showed the Framework effectively reflects task quality based on student mathematical activity and argumentation.
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