I made this amazing purple star at my math workshop last weekend at The Nature Institute in Ghent, NY. I’m pleased with the coloring (I’m not always that patient!) and I’m pleased with the math: I learned all kinds of cool things you can do with pentagons, pentagrams, and the Golden Ratio. I love finding deep problems that you can teach to people at a variety of levels–6th grade through Calculus. I’m looking forward to taking another class there sometime soon.