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The object of this research was to provide an explicit test of the hypothesis that engagement in thinking about a topic enhances the quality of reasoning about that topic. Engagement took the form of a series of dyadic discussions of the topic of capital punishment. At both age levels...
Thirty 8th-grade students were given an interview and a written test before and after a 10-week curriculum unit concerning matter, mass, volume, and density. The instruments probed qualitative understandings of matter; ability to differentiate weight and density using qualitative reasoning;...
In this article, we focus on the instructional explanation of guessing as a heuristic for solving the Five Planes Problem (FPP), given in a lesson by George Pólya. We use the analysis of the lesson to test the applicability of what is known about instructional explanations in elementary...
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