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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

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Peer reviewed Peer reviewed
ERIC Number: EJ075355
Record Type: CIJE
Publication Date: 1973
Pages: N/A
Abstractor: N/A
Reference Count: 0
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Study 3-2: An Exploration of Transitivities Formulated From a Set of Piagetian-Derived Operations and Their Implications in Traversing Learning Hierarchies
Hopkins, Layne V.
Journal for Research in Mathematics Education, 4, 2, 121-123, Mar 73
Publication Type: N/A
Education Level: N/A
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