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Harris, Sara E.; Gold, Anne U. – Environmental Education Research, 2018
We assessed undergraduates' representations of the greenhouse effect, based on student-generated concept sketches, before and after a 30-min constructivist lesson. Principal component analysis of features in student sketches revealed seven distinct and coherent explanatory models including a new "Molecular Details" model. After the…
Descriptors: Molecular Structure, Environmental Education, Intervention, Undergraduate Students
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Chang, Hsin-Yi; Quintana, Chris; Krajcik, Joseph S. – Science Education, 2010
In this study, we investigated whether the understanding of the particulate nature of matter by students was improved by allowing them to design and evaluate molecular animations of chemical phenomena. We developed Chemation, a learner-centered animation tool, to allow seventh-grade students to construct flipbook-like simple animations to show…
Descriptors: Animation, Peer Evaluation, Factor Analysis, Effect Size