Education Technology

NYS Standard G.G.55 - Determining if distance and orientation are preserved under a line reflection.

Published on 03/15/2009

Activity Overview

The students will use the Cabri Jr. APPVAR REFLECT1 to discover the relationship between the lengths of the sides of a pre-image and image after reflection through a line. The students will use the Cabri Jr. APPVAR REFLECT1 to understand orientation of points and the relationship between orientation of the points of a pre-image and image after reflection through a line.

Before the Activity

  1. Download the Cabri Jr. APPVAR REFLECT1to handhelds using TI-Connect software and unit to unit link cables. REFLECT1may also be sent via TI-Navigator.
  2. Students should do the worksheet "Selecting and dragging an object using Cabri Jr."

During the Activity

This activity is a lesson launcher for understanding the relationship between the lengths of the sides and orientation of points of a pre-image and image after reflection through a line.

  1. Distribute the Student Worksheet for G.G. 55 distance.
  2. Students use the Cabri Jr. APPVAR REFLECT1to answer questions from student worksheet.

After the Activity

Review student results from worksheet.