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Showing 196 to 210 of 341 results Save | Export
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Argoti, A.; Fan, L. T.; Cruz, J.; Chou, S. T. – Chemical Engineering Education, 2008
The stochastic simulation of chemical reactions, specifically, a simple reversible chemical reaction obeying the first-order, i.e., linear, rate law, has been presented by Martinez-Urreaga and his collaborators in this journal. The current contribution is intended to complement and augment their work in two aspects. First, the simple reversible…
Descriptors: Chemistry, Equations (Mathematics), Probability, Science Instruction
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Criswell, Brett – Journal of Chemical Education, 2008
Within the historical context of the development of chemistry, Avogadro's hypothesis represents a fundamental concept: It allowed Avogadro to explain Gay-Lussac's law of combining volumes and it allowed Cannizzaro to establish a more accurate set of atomic mass values. If students are going to understand the concept of relative atomic masses and…
Descriptors: Fundamental Concepts, Chemistry, Science Instruction, Scientific Concepts
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Boozer, A. D. – European Journal of Physics, 2008
We present a toy model of quantum electrodynamics (QED) in (1 + 1) dimensions. The QED model is much simpler than QED in (3 + 1) dimensions but exhibits many of the same physical phenomena, and serves as a pedagogical introduction to both QED and quantum field theory in general. We show how the QED model can be derived by quantizing a toy model of…
Descriptors: Toys, Models, Quantum Mechanics, Mechanics (Physics)
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Bouwma-Gearhart, Jana; Stewart, James; Brown, Keffrelyn – International Journal of Science Education, 2009
Understanding the particulate nature of matter (PNM) is vital for participating in many areas of science. We assessed 11 students' atomic/molecular-level explanations of real-world phenomena after their participation in a modelling-based PNM unit. All 11 students offered a scientifically acceptable model regarding atomic/molecular behaviour in…
Descriptors: Science Activities, Causal Models, Heat, Science Instruction
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Asmus, Elaine Garbarino – American Biology Teacher, 2007
Individual students model specific amino acids and then, through dehydration synthesis, a class of students models a protein. The students clearly learn amino acid structure, primary, secondary, tertiary, and quaternary structure in proteins and the nature of the bonds maintaining a protein's shape. This activity is fun, concrete, inexpensive and…
Descriptors: Chemistry, Science Instruction, Molecular Biology, Biochemistry
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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
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Harris, Michelle A.; Peck, Ronald F.; Colton, Shannon; Morris, Jennifer; Neto, Elias Chaibub; Kallio, Julie – CBE - Life Sciences Education, 2009
We conducted a controlled investigation to examine whether a combination of computer imagery and tactile tools helps introductory cell biology laboratory undergraduate students better learn about protein structure/function relationships as compared with computer imagery alone. In all five laboratory sections, students used the molecular imaging…
Descriptors: Experimental Groups, Control Groups, Research Papers (Students), Undergraduate Students
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Aksela, Maija; Lundell, Jan – Chemistry Education Research and Practice, 2008
Modern computer-based molecular modelling opens up new possibilities for chemistry teaching at different levels. This article presents a case study seeking insight into Finnish school teachers' use of computer-based molecular modelling in teaching chemistry, into the different working and teaching methods used, and their opinions about necessary…
Descriptors: Foreign Countries, Information Technology, Telecommunications, Computer Assisted Instruction
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Bindernagel, Janina A.; Eilks, Ingo – Chemistry Education Research and Practice, 2009
This paper describes a study on research-oriented chemistry teacher education, in which fifty-six advanced, secondary school chemistry student teachers working in teams of two interviewed twenty-eight experienced chemistry teachers. The interviews focussed on teachers' personal viewpoints of how to best teach the different levels of…
Descriptors: Chemistry, Pedagogical Content Knowledge, Teaching Methods, Knowledge Base for Teaching
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Geldenhuys, Werner J.; Hayes, Michael; Van der Schyf, Cornelis J.; Allen, David D.; Malan, Sarel F. – Journal of Chemical Education, 2007
A simple, novel and generally applicable method to demonstrate structure-activity associations of a group of biologically interesting compounds in relation to receptor binding is described. This method is useful for undergraduates and graduate students in medicinal chemistry and computer modeling programs.
Descriptors: Chemistry, College Science, Undergraduate Study, Graduate Study
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Hladky, Paul W. – Journal of Chemical Education, 2007
Random-climb models enable undergraduate chemistry students to visualize polymer molecules, quantify their configurational properties, and relate molecular structure to a variety of physical properties. The model could serve as an introduction to more elaborate models of polymer molecules and could help in learning topics such as lattice models of…
Descriptors: Plastics, Molecular Structure, Chemistry, Undergraduate Students
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Montgomery, Craig D. – Journal of Chemical Education, 2007
An exercise is described that has illustrated the effect of various factors on [pi] backbonding to carbonyl ligands, where the students can view the molecular orbitals corresponding to the M-CO [pi] interaction as well as the competing interaction between the metal and co-ligands. The visual and hands-on nature of the modeling exercise has helped…
Descriptors: Teaching Methods, Interaction, Chemistry, Science Experiments
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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
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Weber, Jacques; And Others – Educational Media International, 1992
Explains molecular graphics, i.e., the application of computer graphics techniques to investigate molecular structure, function, and interaction. Structural models and molecular surfaces are discussed, and a theoretical model that can be used for the evaluation of intermolecular interaction energies for organometallics is described. (45…
Descriptors: Chemistry, Computer Graphics, Models, Molecular Structure
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Supalo, Cary A.; Mallouk, Thomas E.; Rankel, Lillian; Amorosi, Christeallia; Graybill, Cameala M. – Journal of Chemical Education, 2008
The creative application of low-cost, readily available materials and techniques promotes inclusion and provides accessibility in the classroom and laboratory for students who are blind or have low vision. Difficulties encountered by these students include operation of laboratory equipment, execution of ordinary laboratory procedures, and use of…
Descriptors: Laboratory Procedures, Laboratory Equipment, Molecular Structure, Science Instruction
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