Lost in Lewis Structures:: An Investigation of Student Difficulties in Developing Representational Competence

Melanie M. Cooper ^[1] ; Nathaniel Grove ^[1] ; Sonia M. Underwood ^[1] ; Michael W. Klymkowsky ^[2]
1. [1] Clemson University
  
  Clemson University
  
  Estados Unidos
2. [2] University of Colorado
Localización: Journal of chemical education, ISSN 0021-9584, Vol. 87, Nº 8 (August), 2010, págs. 869-874
Idioma: inglés
Texto completo no disponible (Saber más ...)

Resumen
- Because Lewis structures provide a direct connection between molecular structure and properties, the ability to construct and use them is an integral component of many chemistry courses. Although a great deal of time and effort has been dedicated to development of “foolproof” rules, students still have problems with the skill. What is more, many students fail to connect the skill with the reasons for learning it. In fact, it appears that conventional instructional practices involved in teaching Lewis structures are in direct conflict with much of what we know about how people learn. In support of this assertion, we present the results of a mixed-methods study designed to investigate how students at all levels draw Lewis structures, and how students perceive the utility of Lewis structures. We offer suggestions for alternative methods of developing this skill in order to provide students with an approach to meaningful learning.