Materials List: 
Swinging with Style
                
                    
 
        
        https://www.teachengineering.org/activities/view/cub_pend_lesson01_activity1
    
Each group needs:
- Access to one playground swing
 - Stop watch
 - Pencil
 - Chair (optional; can also be shared by teams)
 - Swinging with Style Worksheet
 
        https://www.teachengineering.org/activities/view/cub_pend_lesson01_activity1