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| Gilpin, John B. | 1 |
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| Guides - Non-Classroom | 1 |
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Gilpin, John B. – 1980
This document is intended as a resource for persons using, designing, or evaluating instructional materials in whole number subtraction. Its purpose is to provide conceptual machinery: (1) for describing/specifying subtraction tests and exercises and (2) for formulating related questions and conjectures. It is mainly a logical analysis subject to…
Descriptors: Algorithms, Cognitive Processes, Computation, Elementary Education
