Demonstration Process Skills: From Explanation to Validation in a Precalculus Laboratory Course
Jorge Fiallo 1 * , Angélica Mayerly Velasco Méndez 1, Sandra Evely Parada Rico 1
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1 Universidad Industrial de Santander, COLOMBIA* Corresponding Author


We present results of a research developed with first semester students from a Colombian Public University based on classroom intervention in a precalculus laboratory course mediated by an interactive mathematical software. We characterize and exemplify the cognitive skills of explanation, justification, argumentation and validation, using a methodological tool of analysis that integrates the ckç model of Balachef and Margolinas to Toulmin’s model. This tool allows us to identify some elements that characterize each of these skills and allow us to offer a structure of analysis that we present as a proposal for the design of activities in research, based on classroom interventions that promote the development of demonstration skills.


This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Article Type: Research Article

EURASIA J Math Sci Tech Ed, Volume 17, Issue 11, November 2021, Article No: em2033

Publication date: 14 Oct 2021

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