I teach a wide variety of classes during my residency at the Jamestown Art Center. Last week I taught Radial Symmetry. The two pictures above were the samples I created for the adult class. We used transparent vellum, sharpies and colored markers. The design is then cut out.
The photos do not convey the correct colors (no matter how much I tried to altered them in GIMP). However, they do display the two designs I used. To create a radial symmetry drawing you start with a square sheet that is one fourth the desired end result size. I tried the celtic version, and the more wacky one with faces. You then repeat and reverse the drawing onto the larger vellum until you have completed all four squares.
It is a very fun project. I would recommend doing this with middle school ages or above. The cost of materials is higher than average with vellum being relatively expensive paper. You could do this same project with regular paper if you had a proper light table, although vellum is pretty fun to work with.
