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Portraits of middle school students constructing evidence-based arguments during problem-based learning: the impact of computer-based scaffolds

Portraits of middle school students constructing evidence-based arguments during problem-based learning: the impact of computer-based scaffolds A critical step in problem-based learning (PBL) units occurs when groups present their solution to the central problem. This is challenging for middle school students because it involves the creation of an evidence-based argument (Krajcik et al., Journal of the Learning Sciences 7:313–350, 1998). Using a mixed method design, this study investigated (a) the impact of computer-based argumentation scaffolds on middle school students’ argumentation ability, and (b) what middle school students used for support and why during a PBL unit. Data sources included persuasive presentation rating scores, argument evaluation ability test, videotaped class sessions, and prompted interviews. Results included a significant impact on average-achieving students’ argument evaluation ability, and use of the scaffolds by the small groups to plan their research and keep organized. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Educational Technology Research and Development Springer Journals
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