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Camacho, Moises1
Good, Ron1
Heller, Patricia M.1
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Proportional Reasoning: The Effect of Two Context Variables, Rate Type, and Problem Setting.
Peer reviewed Peer reviewed
Heller, Patricia M.; And Others – Journal of Research in Science Teaching, 1989
Investigates the effects of two context variables on the performance of seventh-grade students on a qualitative and numerical proportional reasoning test. Explores the nature of the relationships between rational number skills, qualitative reasoning about ratios, and numerical proportional reasoning. (Author/YP)
Descriptors: Abstract Reasoning, Formal Operations, Grade 7, Problem Sets
Problem Solving and Chemical Equilibrium: Successful versus Unsuccessful Performance.
Peer reviewed Peer reviewed
Camacho, Moises; Good, Ron – Journal of Research in Science Teaching, 1989
Describes the problem-solving behaviors of experts and novices engaged in solving seven chemical equilibrium problems. Lists 27 behavioral tendencies of successful and unsuccessful problem solvers. Discusses several implications for a problem solving theory, think-aloud techniques, adequacy of the chemistry domain, and chemistry instruction.…
Descriptors: Chemistry, College Science, Problem Sets, Problem Solving