Kids can learn about the medical field, wear face masks and gloves and learn about what surgeons do in this free workshop.

Presented by Little Medical School of St. Louis, in this workshop, kids ages 7 to 10 will learn to suture and tie knots. Registration is required.

Is There a Surgeon in the House will be held:

Sept. 19 at 7 p.m. at the St. Louis County Library, Weber Road Branch

Sept. 22 at 6:30 p.m. at the St. Louis County Library, Jamestown Bluffs Branch.

Get ready for some simple chemistry fun at Mad Mixtures, a free workshop for preschoolers ages 3-5.

Take in a highly interactive family concert for free at the St. Louis County Library. 

Parents Choice award winning entertainer Leonardo will perform a free concert at the St. Louis County Library Headquarters Branch at 6:30 p.m. Doors open at 6 p.m.

More information: slsc.org

Celebrate the 100th birthday of the National Park Service with a Supersized Centennial Celebration at the Jefferson National Expansion Memorial. 

Activities include the play "Lift Every Voice: The Black Experience in the Heartland" with interactive scenes that bring the pages of history to life. The play is ideal for ages 8-12 but all ages are invited to enjoy the performances at 10:30 a.m. and 1:30 p.m.

St. Louis Public School and the Urban League of Metro St. Louis present the annual Back to School and Community Enpowerment Festival, free for all city residents. 

This year's festival features a main stage on the arena floor where student performances and academic showcases will take place. Free school supplies will be given away while supplies last and a free lunch will also be served.

Celebrate the 10th anniversary of Pluto's status as a dwarf planet with star shows and fun family activities throughout the day.

The Planetarium's star shows will focus on Pluto and NASA's New Horizon's mission.

10 a.m. to 4 p.m. at the James S. McDonnel Planetarium in Forest Park. 

More information: slsc.org