The students who participate in . They actively experienced some of the processes involved in experts’ practice of data-based inquiry by working on small data scenarios, investigated by peer collaboration and classroom discussions. Students generate and phrase the questions they wish to investigate, suggest hypotheses, analyse data, interpret the results and draw conclusions. At the end, they present their main results to fellow students and parents in a ‘statistical happening’. TinkerPlotsA key element in the design of the Connections project is the idea of growing samples. Growing samples is an instructional heuristic (e.g, Bakker, 2004; Ben-Zvi, 2006), In which students are introduced to increasing sample sizes, all taken from the same population. For each sample, the students are asked to make an informal inference and to predict about the following larger sample.
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