In this challenge, students build a rubber-band-powered rover that can scramble across the room. Students will follow the engineering design process to design and build a rover out of cardboard, figure out how to use rubber bands to spin the wheels, and improve their design based on testing results. Materials Corrugated cardboard body - 6-inch (15-cm) square (per rover) 2 corrugated cardboard wheels - 5-inch (13-cm) square (per rover) 1 sharpened round pencil (per rover) 2 rubber bands (per rov