GPS Satellite Data: Distorted Disturbances Game

Each student needs:

• 2 index cards; alternatively, use half sheets of paper; students write on one card while the other card is given to them already marked by the teacher
• pen or pencil

To share with the entire class:

• (optional) overhead projector to show the class examples of how to alter and make notations on the index card messages, and share the resulting altered messages at activity end