Week 1 for Code Club Fall 2016. This lesson gives us a chance to review the x,y coordinate system. We use the Pen blocks to explore basic shapes and look at some designs with shapes.
Thanks to user AndréNicolas from Math Stack Exchange for pointing me in the right direction to plot an arbitrary arc: http://math.stackexchange.com/questions/260096/find-the-coordinates-of-a-point-on-a-circle
