Patricio Gonzalez Vivo tweeted a great image of a piece by Luiz Sacilotto this morning, which led me to look up more of his art. Plus I was watching students explore rotations yesterday, so instant obsession.[br][br]This is pretty fun to play with, and many patterns are possible. See more Sacilotto art at [url=http://www.sacilotto.com.br]http://www.sacilotto.com.br/[/url]