ABSTRACT
Abstract: The purpose of this study is to investigate evidence-based arguments generated through the use of a web based tool, Showing Evidence. Six of 40 sample classrooms during 2004-2005 were purposefully sampled from the tool's database. Analysis focused on identifYing the physical and argumentation schematic structures of possible evidence based explanations using Toulmin (1958) and Walton (1996) frameworks. Findings demonstrate student's ability to depict proper data for claims yet inability in structuring overall explanations.
