Abstract
This paper, reports on the development of a theoretical framework about statistical thinking and reasoning in relation to data analysis, graphing and graph-sense making. The model developed from a review of the literature is used to construct an assessment instrument that is designed to elicit student prior learning in relation to reasoning about data in an ICT environment. The design of the assessment instrument takes into consideration the different forms of data representations afforded by the graphing software, TinkerPlotsTM Dynamic Data Exploration.