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Developing Ratio and Proportion Schemes: A Story of a Fifth Grader.
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Lo, Jane-Jane; Watanabe, Tad – Journal for Research in Mathematics Education, 1997
Studies the developmental process of how the concepts of ratio and proportion do not develop in isolation, but rather are part of the individual's multiplicative conceptual field, which includes other concepts such as multiplication, division, and rational numbers. Follows one fifth-grade student as he attempts to schematize his…
Descriptors: Concept Formation, Developmental Continuity, Elementary School Mathematics, Individual Development