Communication skills enabled in a pre-calculus course using dynamic geometry software

This article is the result of a research project that aimed to characterize communication skills developed by students who solved problems seven workshops related notions variation and change within framework pre-calculus laboratory course mediated interactive mathematical software at Colombian public university. Data analysis was performed considering characterization interpretation, explanation, justification, which are fundamental for process variational thinking. Here we show evidence identification communicative manifested when solving involving use variation, tendency, approximation.