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Peer reviewedSingh, Parmjit – International Journal of Mathematical Education in Science and Technology, 2000
Investigates the concepts of ratio and proportion constructed by grade 9 students by investigating their proportional reasoning schemes and procedures on three types of tasks: missing value, numerical comparison, and qualitative reasoning. Indicates that students frequently used additive reasoning--that is, a comparison of two numbers by…
Descriptors: Abstract Reasoning, Cognitive Processes, Concept Formation, Foreign Countries
