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Visual models of chemical entities and reactions : perceptions held by grade 11 learners / Boipelo Pearl Mongwaketse

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dc.contributor.author Mongwaketse, Boipelo Pearl
dc.date.accessioned 2009-02-25T14:06:19Z
dc.date.available 2009-02-25T14:06:19Z
dc.date.issued 2006
dc.identifier.uri http://hdl.handle.net/10394/1168
dc.description Thesis (M.Ed.)--North-West University, Potchefstroom Campus, 2006.
dc.description.abstract Learners of chemistry experience problems with the understanding of chemical reactions. One of the causes of this difficulty to understand chemical reactions seems to be that learners do not visualise them, or they do not know how to visualise them. The study aims at probing the learners' perceptions of visual models of sub-microscopic entities (atoms, ions, and molecules), to identify problems they encounter when trying to visualise and to understand chemical reactions. The empirical survey was conducted amongst 100 physical science Grade 11 learners from four high schools in the Bojanala West region near Rustenburg in the North-West Province, South Africa. The investigation was done by means of a questionnaire. The results of the questionnaire were used to identify alternative conceptions and problems that hampered learners' visualisation process. The results indicated that learners had problems with visualisation of the structure and the interaction of basic entities such as atoms, ions and molecules in chemical reactions. This had a negative effect on their understanding of chemical reactions and chemistry.
dc.publisher North-West University
dc.subject Models en
dc.subject Atoms en
dc.subject Icons en
dc.subject Compounds en
dc.subject Chemical reactions en
dc.subject Alternative conceptions en
dc.title Visual models of chemical entities and reactions : perceptions held by grade 11 learners / Boipelo Pearl Mongwaketse en
dc.type Thesis en
dc.description.thesistype Masters


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    This collection contains the original digitized versions of research conducted at the North-West University (Potchefstroom Campus)

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