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Stull, Andrew T.; Hegarty, Mary; Dixon, Bonnie; Stieff, Mike – Cognition and Instruction, 2012
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 because difficult mental processes could be augmented by…
Descriptors: Spatial Ability, Control Groups, Organic Chemistry, Direct Instruction
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Stieff, Mike; Hegarty, Mary; Deslongchamps, Ghislain – Cognition and Instruction, 2011
Increasingly, multi-representational educational technologies are being deployed in science classrooms to support science learning and the development of representational competence. Several studies have indicated that students experience significant challenges working with these multi-representational displays and prefer to use only one…
Descriptors: Educational Technology, Visual Aids, Science Instruction, Organic Chemistry
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Hegarty, Mary; Kriz, Sarah; Cate, Christina – Cognition and Instruction, 2003
The effects of computer animations and mental animation on people's mental models of a mechanical system are examined. In 3 experiments, students learned how a mechanical system works from various instructional treatments including viewing a static diagram of the machine, predicting motion from static diagrams, viewing computer animations, and…
Descriptors: Visualization, Motion, Learning Theories, Spatial Ability
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Ferguson, Erika L.; Hegarty, Mary – Cognition and Instruction, 1995
Two experiments examined how learning from different media--real pulley systems or simple line diagrams--affected mechanical learning and problem solving. The first showed that subjects' learning improved equally in both cases; all subjects showed an increase in quantitative understanding as they learned; and subjects manipulating real pulley…
Descriptors: Active Learning, Cognitive Processes, Cognitive Style, Learning Strategies