Dancing curves : a dynamic demonstration of geometric principles /

Bibliographic Details
Main Author:	Lyng, Merwin J.
Format:	Book
Language:	English
Published:	Reston, Va. : National Council of Teachers of Mathematics, [1978]
Subjects:	Conic sections > Models.

Description
Physical Description:	vi, 16 pages : illustrations ; 23 cm. & slides (4 slides : color ; 2x2 in.) in pockets.
ISBN:	0873531248