The booklet includes several ready-to-color designs, a wide assortment of graph paper, advanced create-your-own tessellation pages, and links to all sorts of online math art resources.
But when I posted the link to Twitter, a friend noticed that several of the resource links were broken. (Thanks, Mark!)
While I was fixing those, I added some new links (to the wonderful School of Islamic Geometric Design pattern templates and classroom resources).
So even if you’ve downloaded the file before, you may want to pick up this new-and-improved edition.