Energy Transformations. How is motion on a rollercoaster related to energy? Teachers will explore the motion of a steel marble rolling down a wooden track after making predictions. Calculate the speed of the marble along the track and graph the results, showing the elegant relationship between PE and KE. Then work in teams to create roller coasters using foam pipe insulation to complete a series of challenges. Design engineering at its best! Not for the faint of heart. Learning is fun.