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The Taiwan National Science Concept Learning Study in an International Perspective
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Treagust, David F.; Chandrasegaran, A. L. – International Journal of Science Education, 2007
Over the past two decades, several two-tier multiple-choice diagnostic tests in science at a variety grade levels have been reported in the extant literature from several countries. This review summarises these studies, provides an overview of the methodology for their construction, presents two examples of typical items, and lists studies…
Descriptors: Foreign Countries, Sampling, Diagnostic Tests, Chemistry
Observational Thresholds in School Chemistry.
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Kempa, R. F.; Ward, J. E. – International Journal of Science Education, 1988
Reported are observational limits of detectability for several single stimulus and multi-stimuli observation tasks in secondary level chemistry. Provided are tables of actual results obtained including type of observation, chemical system used, method of determining stimulus magnitude, and observational thresholds. (Author/YP)
Descriptors: Chemistry, Data Interpretation, Experiments, Laboratory Experiments
Conceptions of Second Year University Students of Some Fundamental Notions in Chemistry.
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Cros, Daniele; And Others – International Journal of Science Education, 1988
Examined the evolution of the knowledge and the notions of students in order to see how after one year of university study their concepts and ideas of scientific theory in chemistry had progressed. Reports that sometimes the students' conceptions are modified in the wrong way. (Author/YP)
Descriptors: Chemistry, College Science, Concept Formation, Foreign Countries
A Comparison of Students' Explanations Derived from Spoken and Written Methods of Questioning and Answering.
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Seddon, G. M.; Pedrosa, M. A. – International Journal of Science Education, 1988
Examined whether and how the quality of students' explanations of chemical phenomena was affected by changing the method of giving the question and answer between the spoken and written formats. Concluded that there was no difference between the performance of students using any of these combinations of formats. (Author/YP)
Descriptors: Chemistry, Class Activities, Classroom Communication, Classroom Research
A Label as a Hidden Persuader: Chemists' Neutralization Concept.
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Schmidt, Hans-Jurgen – International Journal of Science Education, 1991
Identifies and describes the problems students have with the concept of neutralization. Analysis of over 7,500 students' answers to test questions over neutralization showed that many students understand the concept in its original meaning. Students assumed that in any neutralization reaction a neutral solution is formed, even if a weak acid or…
Descriptors: Acids, Chemical Equilibrium, Chemical Reactions, Chemistry