Materials List: 
Energy Perspectives
                
                    
 
         https://www.teachengineering.org/activities/view/cla_activity4_energy_perspectives
        https://www.teachengineering.org/activities/view/cla_activity4_energy_perspectives
    
- computers with Microsoft Excel, one per student pair
- MS Excel workbook file with data, on each computer
 https://www.teachengineering.org/activities/view/cla_activity4_energy_perspectives
        https://www.teachengineering.org/activities/view/cla_activity4_energy_perspectives