Exploring Conic Sections from Paper Folding to TI-NSpireŠ Handheld Tools


Participants will develop a deeper understanding of the definition of parabolas, ellipses, and hyperbolas by paper folding; discover that what looks like each conic section is really the "envelope" of tangent lines; find where the loci of points actually are; mimic the same actions on the TI-NSpire; and compare and contrast the ellipse with the hyperbola.

       The links to all of the word files used in the presentations are included below.  If you have trouble opening them, email me.


Art Mabbott

Secondary Mathematics Coach

Seattle Public Schools

T3 Regional Instructor




Conic Section Instructions


PARABOLA Worksheet


ELLIPSE Worksheet