Students at the Weyburn Comprehensive School tested their Physics 30 projects on Tuesday.

Teacher Ms. Kennedy-Allin uses roller coasters as a way to test students on their understanding of how energy changes forms.

          

   
   
   

Each project must allow a steel marble to travel its entire length without stopping. The design must have at least two hills and include as least one loop. Additional loops, hills or turns were added at the student's discretion.