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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: EJ151938
Record Type: CIJE
Publication Date: 1976
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
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A Wheel Going Forward and Backward at the Same Time!
Cavanaugh, William E.
Mathematics Teacher, 69, 8, 654-656, Dec 76
Activities are suggested for investigating the mathematics underlying an optical illusion. (DT)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
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