This document provides instructions for an activity where students construct a track out of paper, cardboard, or other materials to move a bouncy ball from one place to another. The requirements are that the track can only use tape and toilet paper rolls, and the ball must roll at least 1 yard without assistance. Students then answer questions about adjusting the track, draw their design, and explain how it works. The goal is to have students construct something that performs a task to learn about motion and simple machines.