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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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ERIC Number: EJ046348
Record Type: CIJE
Publication Date: 1971
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
A Note on the Optical Property of the Hyperbola
Kanter, L. H.
School Science and Mathematics, 71, 8, 689-692, Nov 71
Descriptors: Geometry, Instruction, Mathematics, Mathematics Education, Resource Materials, Secondary School Students
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Proof (Mathematics)