Developing an Approach for Teaching and Learning about Lewis Structures

Autor/inn/en	Kaufmann, Ilana; Hamza, Karim M.; Rundgren, Carl-Johan; Eriksson, Lars
Titel	Developing an Approach for Teaching and Learning about Lewis Structures
Quelle	In: International Journal of Science Education, 39 (2017) 12, S.1601-1624 (24 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0950-0693
DOI	10.1080/09500693.2017.1342053
Schlagwörter	College Freshmen; Abstract Reasoning; Learning Processes; Problem Solving; Introductory Courses; Chemistry; Freehand Drawing; Scientific Concepts; Accuracy; Foreign Countries; Visual Aids; Science Instruction; Sweden + Suchen Sie Ihr Suchwort? Studienanfänger; Abstraktes Denken; Denken; Learning process; Lernprozess; Problemlösen; Einführungskurs; Chemie; Drawing; Zeichnen; Ausland; Anschauungsmaterial; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Schweden
Abstract	This study explores first-year university students' reasoning as they learn to draw Lewis structures. We also present a theoretical account of the formal procedure commonly taught for drawing these structures. Students' discussions during problem-solving activities were video recorded and detailed analyses of the discussions were made through the use of practical epistemology analysis (PEA). Our results show that the formal procedure was central for drawing Lewis structures, but its use varied depending on situational aspects. Commonly, the use of individual steps of the formal procedure was contingent on experiences of chemical structures, and other information such as the characteristics of the problem given. The analysis revealed a number of patterns in how students constructed, checked and modified the structure in relation to the formal procedure and the situational aspects. We suggest that explicitly teaching the formal procedure as a process of constructing, checking and modifying might be helpful for students learning to draw Lewis structures. By doing so, the students may learn to check the accuracy of the generated structure not only in relation to the octet rule and formal charge, but also to other experiences that are not explicitly included in the formal procedure. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01