From the event website:
"Stretch your perception with anamorphic mirrors, Möbius strips, and spinning thaumatropes.
These cylindrical mirrors present a distorted, compressed image of things in front of them. See how the size of the mirror and distance of the object affect the distortion.
an you imagine a sheet of paper with only one side? Explore the strange surface of a Möbius strip.
Make a Victorian-era toy that spins two pictures into a single image with the help of string and persistence of vision.
Use everyday materials to create models and other tools for exploring the world around us. Run by a highly skilled, dedicated team of volunteers, these drop-in workshops mix classic activities with open-ended investigations, encouraging participants to follow their hunches to *aha* moments of scientific insight.
All materials provided; take what you make.
Explorables has been offering science to go since 1990."