Simple illustration of increasingly clever ways to draw a pattern using squares, leading to a a spiral-of-squares that increases in size. Use of Making a Block with an input" and the pen. Reminiscent of LOGO Turtle Geometry of course. The "n" key shows a noobie version. The "s" key shows a smarter version. The "e" key shows an expert version. You have to look at the code! Notice the Nautilus Shell emerging in the center of the "e" version.
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