Activity Overview
In this activity, students will investigate the relationship among the three types of rigid transformations - translations, rotations, and reflections.
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 Cable
Use the TI-Navigator™ to transfer the attached Cabri Jr. AppVar files to each calculator
See the attached PDF file for detailed instructions for this activity
Print pages 59 - 60 from the attached PDF file for your class
During the Activity
Distribute the pages to your class.
Follow the Activity procedures:
Use the AppVar to go directly to the exploration section
Construct a triangle and reflect it across two parallel lines
Use transformation tools to explore ways to make a triangle that is equivalent to the composition of reflections across parallel lines
Construct a triangle and reflect it across two intersecting lines
Use transformation tools to explore ways to make a triangle that is equivalent to the composition of reflections across intersecting lines
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary