Education Technology

Finding Extraneous Solutions

Published on 10/20/2009

Activity Overview

Students will solve different types of equations step by step graphically. They will discover that some of the equations have an extraneous solution and they will investigate at which step in solving the equation that these "extra" solutions appear.

Before the Activity

Download the attached PDF and look over the information on the first page. Download and distribute the attached .tns file and Student Worksheet for use during the activity.

During the Activity

Discuss the material from the activity pages and worksheet with students as needed.

After the Activity

Encourage students to summarize what they have learned from completing the activity. If desired, discuss the extension with students.