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through the glass at 211 S Clark, the city turns into a grid: tight windows, lobby mullions, and the bright arch of Calder’s Flamingo folding into reflections. Small figures and cars cross Federal Plaza while ceiling lights float as dots in the glass.

Jitterbug, one of my best-known origami creations.

Geogebra file: geogebra.org/m/wsxthyaz
Origami instructions: foldworks.net/wp-content/uploa

I first came across Buckminster Fuller’s Jitterbug in Amy C. Edmondson’s A Fuller Explanation (1987).

As I didn’t have dowels and four-way rubber connectors, I made several cuboctahedra that worked as Jitterbugs but were not very reversible. Some were from paper and others from drinking straws and elastic thread. This modular origami version is the most recent version.