1. Select Intro activity. 2. Check the Pie Chart, Bar Graph, and Grid checkboxes. 3. Place the skater at the top of the track at 6 meters. 4. Watch as the potential energy changes as the skater m meters and back to 6 meters. 5. Make observations. Observations (What do you notice about poter skater moves on the track?) minimum 3 observ 1 . 2