Activity Detail

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	Rotations in the Plane

Activity Overview

In this activity, students will explore the properties of rotations and the relationships between the original and image figures.

Before the Activity

Install the Cabri Jr. App on the students' graphing calculators using TI Connect™, a TI Connectivity cable and the unit-to-unit link cables

See the attached PDF file for detailed instructions for this activity

Print pages 19 - 28 from the attached PDF file for your class

Activity Downloads:

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During the Activity

Distribute the pages to your class.

Follow the Activity procedures:

Construct a rotation angle tool

Construct a triangle and perform a rotation

Investigate the relationship between the original triangle (the pre-image) and the new triangle (the image)

Drag a vertex of the pre-image, a side of the pre-image, the entire triangle, center of rotation, and one of the radius points around the circle and explore the changes in the new triangle

Understand which properties of the triangle are preserved by the rotation and which are not

After the Activity

Students will fill in the Data Collection and Analysis sheet.

Review student results:

As a class, discuss questions that appeared to be more challenging

Re-teach concepts as necessary

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