Education Technology

NYS Standard G.G.55 - Determining if area is preserved under a rotation about a point.

Published on 03/16/2009

Activity Overview

The students will use the Cabri Jr. APPVAR ROTATE3 to discover the relationship between the measures of the areas of a pre-image and image after a rotation about a point.

Before the Activity

  1. Download the Cabri Jr. APPVAR ROTATE3 to handhelds using TI-Connect software and unit to unit link cables. ROTATE3 may 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 measures of the areas of a pre-image and image after a rotation about a point.

  1. Distribute the Student Worksheet for G.G. 55 area.
  2. Students use the Cabri Jr. APPVAR ROTATE3 to answer questions from student worksheet.

After the Activity

Review student results from worksheet.