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The ability to display an accurate image is commonly assumed to be a benefit of dynamic geometry software—it seems reasonable to conclude that the task of noticing and interpreting relationships between objects is easier if figures are drawn to...

A blended learning program for professional development was developed to help middle school teachers meet the demands of a challenging new curriculum in mathematics. The program combined face-to-face sessions and online learning components. We...

Students in a graduate geometry class used items such as paper, ribbon, plastic spheres, cardboard tubes, and markers to carry out investigations in spherical geometry. The hands-on activities helped students develop a new appreciation of geometry...

During a three year study of implementation of the TI-Navigator in secondary school mathematics, by ‘typical’ teachers, we identified a number of unexpected support needs. Some could be addressed by the researchers in conjunction with the teachers,...