Education Technology

Parallel or Perpendicular-What's Your Inclination?

Activity Overview

This activity has students discover the relationship between parallel and perpendicular lines and their slopes. After constructing these objects using CABRI Geometry II for the TI-89, slopes are measured. (Topic - parallel and perpendicular lines)

Before the Activity

Students should have access to the TI-89/TI-89 Titanium.

During the Activity

Students will construct multiple lines using CABRI Geometry II and determine whether the lines are parallel, perpendicular, or neither. This activity can be teacher directed or discovery.

After the Activity

Review student answers:

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