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Peer reviewedBarker, Vanessa; Millar, Robin – International Journal of Science Education, 1999
Explores changes in students' (n=250) thinking about basic chemical ideas during a context-based curricular approach. Suggests that 16- to 18-year-old students enter chemistry courses with a wide range of misunderstandings about chemical reactions, but understanding improves steadily as the course progresses. Concludes that even misunderstandings…
Descriptors: Chemical Reactions, Chemistry, Concept Formation, Foreign Countries
Peer reviewedBarker, Vanessa; Millar, Robin – International Journal of Science Education, 2000
A longitudinal study of students (n=250) following the Salters Advanced Chemistry course probed a range of chemical ideas including the exothermicity of bond formation and the development of thinking about covalent, ionic, and intermolecular bonds. At the start, many students demonstrated misunderstandings about these chemical ideas, but their…
Descriptors: Chemical Bonding, Chemistry, Concept Formation, Context Effect
