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    Problem-based learning and argumentation: testing a scaffolding framework to support middle school students’ creation of evidence-based arguments

    Students engaged in problem-based learning (PBL) units solve ill-structured problems in small groups, and then present arguments in support of their solution. However, middle school students often struggle dev...

    Brian R. Belland, Krista D. Glazewski, Jennifer C. Richardson in Instructional Science (2011)