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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: EJ191251
Record Type: CIJE
Publication Date: 1978
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Sharing Teaching Ideas.
Mathematics Teacher, v71 n6 p512-17 Sep 1978, Sep78
Contained in this column are articles discussing the following topics: cross-number puzzles, an intuitive development of pi, a three-column proof format, and an easily constructed kit to be used in acquainting students with the wrapping function used in introducing circular functions. (MP)
Descriptors: Algebra, Class Activities, Educational Games, Instruction, Learning Activities, Manipulative Materials, Mathematical Enrichment, Resource Materials, Secondary Education, Secondary School Mathematics, Trigonometry
Publication Type: N/A
Education Level: N/A
Audience: Practitioners
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Functions (Mathematics); Proof (Mathematics)