Education Technology

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

Author
Subject Area
Math: Geometry: Transformational Geometry
Level
9-12
Activity Time
15 Minutes
TI Calculator
TI-83 Plus Family
TI-84 Plus
TI-84 Plus Silver Edition
Resource Types
Lessons

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

Activity Overview

The students will use the Cabri Jr. APPVAR ROTATE2 to discover the relationship between the measures of the angles of a pre-image and image after a rotation about a point.

Before the Activity

  1. Download the Cabri Jr. APPVAR ROTATE2 to handhelds using TI-Connect software and unit to unit link cables. ROTATE2 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 angles of a pre-image and image after a rotation about a point.

  1. Distribute the Student Worksheet for G.G. 55 angle measure.
  2. Students use the Cabri Jr. APPVAR ROTATE2 to answer questions from student worksheet.

After the Activity

Review student results from worksheet.

Author
Subject Area
Math: Geometry: Transformational Geometry
Level
9-12
Activity Time
15 Minutes
TI Calculator
TI-83 Plus Family
TI-84 Plus
TI-84 Plus Silver Edition
Resource Types
Lessons
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