April, when my son graduated I made a large sheet cake, then made 1/2 ball cake, took a piece of cardboard, cut out for the top of the graduation cap, put all together. Made the tassel from fondant that you can buy at Wal Mart. Made the hat in the school color. Put the hat on one end of the sheet cake and decorated and writing on the ohter end, was really a nice cake. You could put math symbols around the edge of the sheet cake, and even make a calculator out of fondant as a added feature. What ever you decide, good luck and wish your daughter the best of luck. Gladys ... View related article.