From their event page: 

Join Fairmount Park Conservancy for a special day at Anna C. Verna Playground, celebrating its recognition as Philadelphia’s “Best Playground” in Philadelphia magazine’s Best of Philly® 2024. Kids and playground enthusiasts of all ages are invited to enjoy free treats, arts activities, a field games pop-up hosted by Kidokinetics – and, of course, Philly’s best playground!

More about the field games pop-up:
Feeling inspired by the recent Olympic games? Join West Philadelphia’s Kidokinetics as we put our skills to the test through a series of sports-inspired exercises and challenges. Try out new activities (ever heard of cone bowling?) while also learning the basics of sports like football, soccer, and tee-ball.

Since 1996, Kidokinetics has provided kids of all ages with a playful introduction to sports and physical education. Their sports enrichment and physical education programs go to preschools, elementary schools, local parks and community centers.