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postgraduate thesis: Students' conceptions of stoichiometry at the submicro level

TitleStudents' conceptions of stoichiometry at the submicro level
Authors
Issue Date2014
PublisherThe University of Hong Kong (Pokfulam, Hong Kong)
Citation
Chan, S. [陳倩欣]. (2014). Students' conceptions of stoichiometry at the submicro level. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5396387
AbstractStoichiometry is an important topic in chemistry. It tells how many reactants are required to produce a certain amount of product in terms of mass, mole and volume. Learning stoichiometric calculation involves the understanding of certain concepts such as the mole, stoichiometric ratios and chemical equations. Some studies attributed the failure in learning stoichiometry to the unfamiliarity with the amount of substance in a mole and students’ weakness in the mathematical ability. Nevertheless how students connect the submicro level and the symbolic level in learning stoichiometry was not discussed widely. In this study, two examples of chemical reactions with different levels of difficulties were used to probe students’ conceptual understanding in stoichiometry at the submicro level. Their strategies used in stoichiometric calculations were examined by an interview study of five Secondary Five students. The connection between the submicro level and the symbolic level in learning stoichiometry would be also probed into. Results indicate that the failure of stoichiometry learning may due to the disconnection in different levels of representation and students’ generated strategy – ‘one portion reasoning’. An implication for teaching and learning is that teachers should use diagrams at the submicro level in the teaching of stoichiometry. Such diagrams should aim to help students building connections across the three levels of representation and enhancing students’ conceptual understanding in stoichiometry.
DegreeMaster of Education
SubjectChemistry - Study and teaching (Secondary)
Dept/ProgramEducation
Persistent Identifierhttp://hdl.handle.net/10722/209683

 

DC FieldValueLanguage
dc.contributor.authorChan, Sin-yan-
dc.contributor.author陳倩欣-
dc.date.accessioned2015-05-12T23:13:42Z-
dc.date.available2015-05-12T23:13:42Z-
dc.date.issued2014-
dc.identifier.citationChan, S. [陳倩欣]. (2014). Students' conceptions of stoichiometry at the submicro level. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5396387-
dc.identifier.urihttp://hdl.handle.net/10722/209683-
dc.description.abstractStoichiometry is an important topic in chemistry. It tells how many reactants are required to produce a certain amount of product in terms of mass, mole and volume. Learning stoichiometric calculation involves the understanding of certain concepts such as the mole, stoichiometric ratios and chemical equations. Some studies attributed the failure in learning stoichiometry to the unfamiliarity with the amount of substance in a mole and students’ weakness in the mathematical ability. Nevertheless how students connect the submicro level and the symbolic level in learning stoichiometry was not discussed widely. In this study, two examples of chemical reactions with different levels of difficulties were used to probe students’ conceptual understanding in stoichiometry at the submicro level. Their strategies used in stoichiometric calculations were examined by an interview study of five Secondary Five students. The connection between the submicro level and the symbolic level in learning stoichiometry would be also probed into. Results indicate that the failure of stoichiometry learning may due to the disconnection in different levels of representation and students’ generated strategy – ‘one portion reasoning’. An implication for teaching and learning is that teachers should use diagrams at the submicro level in the teaching of stoichiometry. Such diagrams should aim to help students building connections across the three levels of representation and enhancing students’ conceptual understanding in stoichiometry.-
dc.languageeng-
dc.publisherThe University of Hong Kong (Pokfulam, Hong Kong)-
dc.relation.ispartofHKU Theses Online (HKUTO)-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe author retains all proprietary rights, (such as patent rights) and the right to use in future works.-
dc.subject.lcshChemistry - Study and teaching (Secondary)-
dc.titleStudents' conceptions of stoichiometry at the submicro level-
dc.typePG_Thesis-
dc.identifier.hkulb5396387-
dc.description.thesisnameMaster of Education-
dc.description.thesislevelMaster-
dc.description.thesisdisciplineEducation-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.5353/th_b5396387-

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