The CGC had a great time volunteering at another fun Thinkery21 event. This month the theme was Spy School, so we presented a poster and activity about invisible ink! Visitors were tasked with discovering our volunteers’ real identities by revealing invisible messages.
Spy students trying out some invisible ink techniques. Emily explains the types and history of invisible ink.
Logan prepares the purple cabbage indicator. Invisible face designs on Olja, Jon, and Chris.
Jon, Joey, and Olja looking good under UV irradiation!