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Direct linkBelland, Brian R. – Educational Technology Research and Development, 2010
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…
Descriptors: Middle School Students, Persuasive Discourse, Problem Based Learning, Student Improvement
Ozogul, Gamze; Sullivan, Howard – Educational Technology Research and Development, 2009
This study investigated the effects of teacher, self and peer evaluation on preservice teachers' performance, knowledge and attitudes. Earlier research by the same authors revealed that students made significant improvements in their lesson plans under all three of these conditions, but the teacher-evaluation improved significantly more than the…
Descriptors: Preservice Teachers, Evaluators, Teacher Role, Peer Evaluation
