Generalized Rubric for Level of Explanation Sophistication for Nucleophiles in Organic Chemistry Reaction Mechanisms

Autor/inn/en	Yik, Brandon J.; Dood, Amber J.; Frost, Stephanie J. H.; de Arellano, Daniel Cruz-Ramirez
Titel	Generalized Rubric for Level of Explanation Sophistication for Nucleophiles in Organic Chemistry Reaction Mechanisms
Quelle	In: Chemistry Education Research and Practice, 24 (2023) 1, S.263-282 (20 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Yik, Brandon J.) ORCID (Dood, Amber J.) ORCID (Frost, Stephanie J. H.) ORCID (de Arellano, Daniel Cruz-Ramirez)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
DOI	10.1039/d2rp00184e
Schlagwörter	Scoring Rubrics; Organic Chemistry; Scientific Concepts; Student Evaluation; Evaluation Methods; Knowledge Level; College Science; College Students; Florida + Suchen Sie Ihr Suchwort? Scoring formulas; Auswertungsbogen; Organische Chemie; Schulnote; Studentische Bewertung; Wissensbasis; Collegestudent
Abstract	Reaction mechanisms are central to organic chemistry and organic chemistry education. Assessing understanding of reaction mechanisms can be evaluated holistically, wherein the entire mechanism is considered; however, we assert that such an evaluation does not account for how learners variably understand mechanistic components (e.g., nucleophile, electrophile) or steps (e.g., nucleophilic attack, proton transfer). For example, a learner may have proficiency of proton transfer steps without sufficient proficiency of a step where a nucleophile and electrophile interact. Herein, we report the development of a generalized rubric to assess the level of explanation sophistication for nucleophiles in written explanations of organic chemistry reaction mechanisms from postsecondary courses. This rubric operationalizes and applies chemistry education research findings by articulating four hierarchical levels of explanation sophistication: absent, descriptive, foundational, and complex. We provide evidence for the utility of the rubric in an assortment of contexts: (a) stages of an organic chemistry course (i.e., first or second semester), (b) across nucleophile and reaction types, and (c) across prompt variations. We, as well, present a case study detailing how this rubric could be applied in a course to collect assessment data to inform learning and instruction. Our results demonstrate the practical implementation of this rubric to assess understanding of nucleophiles and offer avenues for establishing rubrics for additional mechanistic components, and understanding and evaluating curricula. (As Provided).
Anmerkungen	Royal Society of Chemistry. Thomas Graham House, Science Park, Milton Road, Cambridge, CB4 0WF, UK. Tel: +44-1223 420066; Fax: +44-1223 423623; e-mail: cerp@rsc.org; Web site: http://www.rsc.org/cerp
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01