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To What Degree Does Handling Concrete Molecular Models Promote the Ability to Translate and Coordinate between 2D and 3D Molecular Structure Representations? A Case Study with Algerian Students
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Mohamed-Salah, Boukhechem; Alain, Dumon – Chemistry Education Research and Practice, 2016
This study aims to assess whether the handling of concrete ball-and-stick molecular models promotes translation between diagrammatic representations and a concrete model (or vice versa) and the coordination of the different types of structural representations of a given molecular structure. Forty-one Algerian undergraduate students were requested…
Descriptors: Foreign Countries, Undergraduate Students, Molecular Structure, Models
Assessing High School Chemistry Students' Modeling Sub-Skills in a Computerized Molecular Modeling Learning Environment
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Dori, Yehudit Judy; Kaberman, Zvia – Instructional Science: An International Journal of the Learning Sciences, 2012
Much knowledge in chemistry exists at a molecular level, inaccessible to direct perception. Chemistry instruction should therefore include multiple visual representations, such as molecular models and symbols. This study describes the implementation and assessment of a learning unit designed for 12th grade chemistry honors students. The organic…
Descriptors: Organic Chemistry, Grade 12, Secondary School Science, Science Instruction
High-School Students' Conceptual Difficulties and Attempts at Conceptual Change: The Case of Basic Quantum Chemical Concepts
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Tsaparlis, Georgios; Papaphotis, Georgios – International Journal of Science Education, 2009
This study tested for deep understanding and critical thinking about basic quantum chemical concepts taught at 12th grade (age 17-18). Our aim was to achieve conceptual change in students. A quantitative study was conducted first (n = 125), and following this 23 selected students took part in semi-structured interviews either individually or in…
Descriptors: Constructivism (Learning), Rote Learning, Chemistry, Interviews
The Effect of Different Molecular Models on High School Students' Conceptions of Molecular Genetics
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Rotbain, Yosi; Stavy, Ruth; Marbach-Ad, Gili – Science Education Review, 2008
Our main goal in this study was to explore whether the use of models in high school molecular genetics instruction can contribute to students' understanding of concepts and processes in genetics. Three hundred and nineteen students from four comparable groups of 11th- and 12th-grade students participated. The control group (116 students) was…
Descriptors: Molecular Structure, Models, High School Students, Genetics
Model Perception among Pre- and In-Service Chemistry Teachers.
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Barnea, Nitza; And Others – 1995
In science teaching insufficient emphasis is placed on the fact that models are simulations of reality based on a certain theory and that molecules are not miniatures of the models that represent them. The study reported in this paper investigated how chemistry teachers perceive the nature and functions of models. The research population included…
Descriptors: Chemical Bonding, Chemistry, Foreign Countries, Higher Education
Effect of Bead and Illustrations Models on High School Students' Achievement in Molecular Genetics
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Rotbain, Yosi; Marbach-Ad, Gili; Stavy, Ruth – Journal of Research in Science Teaching, 2006
Our main goal in this study was to explore whether the use of models in molecular genetics instruction in high school can contribute to students' understanding of concepts and processes in genetics. Three comparable groups of 11th and 12th graders participated: The control group (116 students) was taught in the traditional lecture format, while…
Descriptors: Illustrations, Grade 12, Genetics, Science Achievement