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Extreme Case Reasoning and Model Based Learning Experts and Students (with L. Stephens), Proceedings of the 2009 Annual Meeting of the National Association for Research in Science Learning (2009)
 

Anchoring Student Reasoning in Prior Knowledge: Characteristics of Anchoring Cases in a Curriculum (with L. Stephens), Proceedings of the NARST 2008 Annual Meeting (2008)
 

Designing Classroom Thought Experiements: What We Can Learn from Imagery Indicators and Expert Protocols (with L Stephens), Proceedings of the NARST 2006 Annual Meeting (2006)