Education Technology

Cubic Inflection

Activity Overview

This application of derivatives introduces students to an interesting property of cubics and a method of proving that property using the TI-89 scripts. They then use the CAS of their TI-89 to generalize upon specific results.

Before the Activity

Students should have access to TI-89/TI-89 Titanium and TI-92 Plus/Voyage.

During the Activity

The document attached is the activity guide. Provide each student with a printed copy of this document.

After the Activity

Review student results and, as a class, discuss questions that appeared to be more challenging. Re-teach concepts as necessary.