It's amazing that one tiny acorn can grow into an enomous oak tree. Little ones, ages 3 to 6, will investigate the life of an oak tree and its importance in the forest then go on a hike to search for oak trees and acorns.
10 a.m. to 11:30 a.m. Free, but reservations are required.
At Powder Valley Conservation Nature Center in Kirkwood, near the intersection of I-44 and I-270. Call 314-301-1500 for reservations.
More information: mdc.mo.gov
Take your family to watch birds of prey fly right over your head, meet the wonderful bird ambassadors of the World Bird Sanctuary up close and much more.
Kids can work on existing gym skills, learn new skills or just play around during Open Gym at Miss Kelly's Gym in Creve Coeur.
The Spirit of St. Louis Air Show and STEM Expo features amazing performers and captivating static displays that overtake the skies near Chesterfield Airport. Catch the U.S. Navy Blue Angels along with performers Matt Younkin and Skip Stewart and others as they pierce the sky and defy physics.
Get ready for tons of free, soapy fun! Come to the library to play with tons of bubbles with the Bubble Bus.
See the Zoo's California sea lions perform acrobatic and athletic feats, including Olympic-style dives on a high-diving platform, flipper walks, frisbee tosses and plenty of surprises. While on stage with the sea lions, the Zoo's trainers explain sea lion behavior and positive-reinforcement training, in addition to the need for conserving the sea lion's ocean habitat.