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| Educational Research | 1 |
| Elementary School Mathematics | 1 |
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| Journal for Research in… | 1 |
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Peer reviewedUprichard, A. Edward; Phillips, E. Ray – Journal for Research in Mathematics Education, 1977
A hierarchy for rational number addition was constructed using intraconcept analysis. A test to assess mastery at each of 45 levels was administered to 200 elementary students representing a wide range of achievement and ability levels. Implications of the results for development of optimal instructional sequences are discussed. (Author/DT)
Descriptors: Addition, Educational Research, Elementary School Mathematics, Elementary Secondary Education
