Philadelphia Science Festival
Source: Franklin Institute
Description: Each Spring, the Franklin Institute cooperates with numerous local institutions to sponsor a week-long celebration of dozens of events related to STEM topics. During the festival, students, teachers and families can participate in fun learning activities throughout the city and in several suburban areas. The festival culminates in a carnival which is free and open to the public.
Website: https://www.fi.edu/psf/programs/festival-at-a-Glance