NotesFAQContact Us
Collection
Advanced
Search Tips
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.

Learn more about the history of ERIC here. PDF icon

Back to results
Peer reviewed Peer reviewed
ERIC Number: EJ348121
Record Type: CIJE
Publication Date: 1987
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Spheres in a Cone; or, Proving the Conic Sections.
Atkinson, David
Mathematics Teacher, v80 n3 p182-84 Mar 1987
A proof of the conic sections of an ellipse is presented. (MNS)
Descriptors: Geometric Concepts, Mathematics, Mathematics Instruction, Proof (Mathematics), Secondary Education, Secondary School Mathematics
Publication Type: Journal Articles; Guides - Classroom - Teacher
Education Level: N/A
Audience: Teachers; Practitioners
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Conics