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Cramer, Kathleen; Post, Thomas – 1995
At issue in this study was the extent to which large numbers of classroom teachers were able to implement research-based materials with a minimum of inservice education. Also at issue was whether students of these teachers were able to develop the rich mental images for fractions similar to the ones students from previous Rational Number Project…
Descriptors: Cognitive Structures, Concept Formation, Elementary School Students, Fractions