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Iowa State University

Chemistry Publications

First-year undergraduate general chemistry

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Eye Tracking Student Strategies For Solving Stoichiometry Problems Involving Particulate Nature Of Matter Diagrams, John Y. Baluyut, Thomas A. Holme Feb 2019

Eye Tracking Student Strategies For Solving Stoichiometry Problems Involving Particulate Nature Of Matter Diagrams, John Y. Baluyut, Thomas A. Holme

Chemistry Publications

This study compared how students obtained and used information from particulate nature of matter (PNOM) diagrams as well as balanced chemical equations when asked questions about stoichiometry concepts such as limiting and excess reagents, and yield. The comparisons were made in terms of visual behaviors by examining eye fixations while students responded to a 30-item online instrument. Statistically significant differences were found between visual behaviors of high- and low-performers on seven items, mostly those that dealt with correctly identifying the limiting reagent for each diagram. High-performing students were found to have spent more time examining PNOM diagrams and transitioned more ...