Materials List: 
Energy Skate Park
                
                    
 
        
        https://www.teachengineering.org/activities/view/van_hybrid_design_activity1
    
Each student needs:
- Energy Skate Park Worksheet
 - computer with Internet access, Java installed and ability to run the simulation at http://phet.colorado.edu/en/simulation/energy-skate-park.
 - graph paper
 - colored pencils
 
        https://www.teachengineering.org/activities/view/van_hybrid_design_activity1