MoMath likes to celebrate the solstices with math-related events in the plaza just north of the Flatiron Building. This year I was tasked with designing a sundial (along with our Chief Educator and Associate Director as technical consultants) wherein a person would stand as the gnomon and cast a shadow telling the time of day. It became a 15′ x 15′ vinyl mat which was deployed in the plaza on the Summer Solstice for people to interact with and enjoy.
First customer of the day:
People were encouraged to leave a sticker with a message on it. This was at the beginning of lunch: