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Meek, Simon J.; Pitman, Catherine L.; Miller, Alexander J. M. – Journal of Chemical Education, 2016
An introductory guide to deducing the mechanism of chemical reactions is presented. Following a typical workflow for probing reaction mechanism, the guide introduces a wide range of kinetic and mechanistic tools. In addition to serving as a broad introduction to mechanistic analysis for students and researchers, the guide has also been used by…
Descriptors: Science Instruction, College Science, Chemistry, Scientific Concepts
White, Robert S.; McKenzie, Dan P. – Scientific American, 1989
Investigates the nature of catastrophic volcanism and the rifting process. Describes two kinds of evidence: quantitative descriptions of rock melting and a wide range of observations. Discusses examples of continent growth in the North Atlantic, India and the Seychelles islands, and the South Atlantic. (YP)
Descriptors: Earth Science, Geographic Regions, Geology, Geophysics
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Cauzinille-Marmeche, Evelyne; And Others – Science Education, 1985
Investigated the role of "a priori" ideas in planning experiments and data processing leading to inferences. Thirty-one students (ages 11-13) observed a "combustion/candle in a closed container" experiment and were asked to interpret sets of measurements. Findings, among others, show that children preferentially experiment on…
Descriptors: Cognitive Processes, Cognitive Structures, Comprehension, Elementary Education
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Hansen, Robert C. – Journal of Chemical Education, 1988
Describes a demonstration procedure using controlled reduction potentials to predict observed color changes which are then experimentally verified. Demonstrates the usefulness of this procedure in helping students understand LeChatelier's principle and the solubilit rule "like dissolves like." (CW)
Descriptors: Chemical Reactions, Chemistry, College Science, Demonstrations (Educational)
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Warneck, Peter – Journal of Chemical Education, 1989
Discusses the mechanism and the change of pH during the reaction. Notes that a dramatic rise in pH occurs when the reaction nears completion. Evaluates theories by other authors. (MVL)
Descriptors: Chemical Equilibrium, Chemical Reactions, Chemistry, College Science
Renner, John W.; And Others – 1983
A learning cycle consists of three phases: exploration; conceptual invention; and expansion of an idea. These phases parallel Piaget's functioning model of assimilation, disequilibrium and accommodation, and organization respectively. The learning cycle perceives students as actors rather than reactors to the environment. Inherent in that…
Descriptors: Cognitive Development, Concept Formation, High Schools, Instructional Materials
Abraham, Michael R.; Renner, John W. – 1983
A learning cycle consists of three phases: exploration; conceptual invention; and expansion of an idea. These phases parallel Piaget's functioning model of assimilation, disequilibrium and accomodation, and organization respectively. The learning cycle perceives students as actors rather than reactors to the environment. Inherent in that…
Descriptors: Chemistry, Cognitive Development, Concept Formation, Discussion (Teaching Technique)
Osborne, Roger; And Others – 1979
The first (exploratory) phase of the Learning in Science Project focused on science teaching/learning in the Form 1 to 4 level (ages 10 to 14) and sought to identify problems and difficulties in several areas. Provided in this paper are comments obtained during structured/unstructured interviews (from students, ex-students, teachers, headmasters,…
Descriptors: Academic Achievement, Curriculum Development, Elementary School Science, Elementary Secondary Education