Students discussed the difference between two-sided symmetry and radial symmetry that goes around a circle ('radial' sure sounds a lot like 'radius.') To create their radial symmetry designs, they used a graphite transfer process. This means they scribbled on the back of their design, placed it on their art paper, and pressed down hard as they traced their designs. This allows the scribbled pencil lead to transfer their image to their art paper (the same way that graphite tracing paper works.)