Education Technology

Ellipse: Envelope of Lines (Cabri Jr.)

Published on 08/21/2006

Activity Overview

Create an ellipse using an envelope of lines with Cabri Jr.

Before the Activity

Students should have access to either the TI-83 or TI-84 family of calculators and a copy of the attached .pdf file.

During the Activity

Students will create an ellipse using an envelope of lines with Cabri Jr.

After the Activity

Review student answers:

  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary