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This article explores articles from the Journal of World History, from 1990 to 2008, to uncover conceptual devices world historians use in their work. The goal is to identify promising devices for improving world history instruction. While teaching world history is viewed as increasingly...
This article presents a theoretical model of the process by which students construct and elaborate explanations of scientific phenomena using visual representations. The model describes progress in the underlying conceptual processes in students’ explanations as a reorganization of fine-grained...
In representation-rich domains such as organic chemistry, students must be facile and accurate when translating between different 2D representations, such as diagrams. We hypothesized that translating between organic chemistry diagrams would be more accurate when concrete models were used...
A 9-month training experiment evaluated whether computer-assisted discovery learning of arithmetic regularities can facilitate kindergartners’ fluency with the easiest sums. After a pretest, kindergartners with at least one risk factor (n = 28) were randomly assigned to either a structured...
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