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50 Years of ERIC
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Peer reviewed Peer reviewed
ERIC Number: EJ518929
Record Type: CIJE
Publication Date: 1996
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0025-5769
The Incredible Three-by-Five Card!
Lufkin, Dan
Mathematics Teacher, v89 n2 p96-98 Feb 1996
Describes how a 3-inch by 5-inch card can be used to develop properties of similar triangles and prove the Pythagorean theorem. (MKR)
Descriptors: Geometry, Mathematics Instruction, Mathematics Materials, Proof (Mathematics), Secondary Education, Triangles (Geometry)
Publication Type: Guides - Classroom - Teacher; Journal Articles
Education Level: N/A
Audience: Teachers; Practitioners
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Pythagorean Theorem