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Developing an understanding of ions in junior secondary school chemistry


Waldrip, BG and Prain, V, Developing an understanding of ions in junior secondary school chemistry, International Journal of Science and Mathematics Education, 10, (5) pp. 1191-1213. ISSN 1571-0068 (2012) [Refereed Article]

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Copyright 2011 National Science Council, Taiwan

DOI: doi:10.1007/s10763-011-9327-7


There is growing research interest in the challenges and opportunities learners face in representing scientific understandings, processes and reasoning. These challenges include integrating verbal, visual and mathematical modes in science discourse to make strong conceptual links between representations and classroom experiences. Our paper reports on a project that aimed to identify practical and theoretical issues entailed in a representation-intensive approach to guiding students’ conceptual learning in science. We focus here on a teacher developing students’ understanding of the formation of ions and molecules. We argue that the representations produced by students in this process met the criteria for representational competence proposed by diSessa (Cognition and Instruction, 22, 293–331, 2004) and Kozma & Russell (2005). The students understood that an effective representation needed to show relevant information, focus on pertinent points, be self-sufficient in its claims about the topic and provide coherent links between different parts of the representation. The final activity showed that their representations reached Kozma & Russell’s (2005) highest level of competence, where the students were able to use specific features of their representations to critique their suitability for explaining bonding and were able to show how their representation linked to the periodic table as a representation. We conclude by considering the implications of these findings.

Item Details

Item Type:Refereed Article
Research Division:Education
Research Group:Education systems
Research Field:Secondary education
Objective Division:Education and Training
Objective Group:Learner and learning
Objective Field:Learner and learning not elsewhere classified
UTAS Author:Waldrip, BG (Professor Bruce Waldrip)
ID Code:95150
Year Published:2012
Web of Science® Times Cited:7
Deposited By:Education
Deposited On:2014-09-25
Last Modified:2018-02-05

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