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Kinetics of Acid Reactions: Making Sense of Associated Concepts
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Tan, Kim Chwee Daniel; Treagust, David F.; Chandrasegaran, A. L.; Mocerino, Mauro – Chemistry Education Research and Practice, 2010
In chemical kinetics, in addition to the concepts related to kinetics, stoichiometry, chemical equilibrium and the characteristics of the reactants are often involved when comparing the rates of different reactions, making such comparisons very challenging for students at all levels, as well as for pre-service science teachers. Consequently, four…
Descriptors: Kinetics, Chemistry, Stoichiometry, Graphs
An Investigation into the Relationship between Students' Conceptions of the Particulate Nature of Matter and Their Understanding of Chemical Bonding
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Othman, Jazilah; Treagust, David F.; Chandrasegaran, A. L. – International Journal of Science Education, 2008
A thorough understanding of chemical bonding requires familiarity with the particulate nature of matter. In this study, a two-tier multiple-choice diagnostic instrument consisting of ten items (five items involving each of the two concepts) was developed to assess students' understanding of the particulate nature of matter and chemical bonding so…
Descriptors: Chemistry, Foreign Countries, Grade 9, Grade 10
Students' Understanding of the Descriptive and Predictive Nature of Teaching Models in Organic Chemistry
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Treagust, David F.; Chittleborough, Gail D.; Mamiala, Thapelo L. – Research in Science Education, 2004
The purpose of the study was to investigate secondary students' understanding of the descriptive and predictive nature of teaching models used in representing compounds in introductory organic chemistry. Of interest were the relationships between teaching models, scientific models, and students' mental models and expressed models. The results from…
Descriptors: Teaching Models, Organic Chemistry, Secondary School Science, Science Instruction
Diagnosing Secondary Students' Misconceptions of Photosynthesis and Respiration in Plants Using a Two-Tier Multiple Choice Instrument.
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Haslam, Filocha; Treagust, David F. – Journal of Biological Education, 1987
Describes a multiple-choice instrument that reliably and validly diagnoses secondary students' understanding of photosynthesis and respiration in plants. Highlights the consistency of students' misconceptions across secondary levels and indicates a high percentage of students have misconceptions regarding plant physiology. (CW)
Descriptors: Biochemistry, Biology, Botany, Cognitive Structures
The Effectiveness of Predict-Observe-Explain Tasks in Diagnosing Students' Understanding of Science and in Identifying Their Levels of Achievement.
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Liew, Chong-Wah; Treagust, David F. – 1998
This study involves action research to explore the effectiveness of the Predict-Observe-Explain (POE) technique in diagnosing students' understanding of science and identifying their levels of achievement. A multidimensional interpretive framework is used to interpret students' understanding of science. The research methodology incorporated…
Descriptors: Academic Achievement, Action Research, Comprehension, Constructivism (Learning)
Understanding Genetics: Analysis of Secondary Students' Conceptual Status
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Tsui, Chi-Yan; Treagust, David F. – Journal of Research in Science Teaching, 2007
This article explores the conceptual change of students in Grades 10 and 12 in three Australian senior high schools when the teachers included computer multimedia to a greater or lesser extent in their teaching of a genetics course. The study, underpinned by a multidimensional conceptual-change framework, used an interpretive approach and a…
Descriptors: Teaching Methods, Grade 10, Concept Formation, Genetics