Join a discussion of the musculoskeletal system offered by the Athletic Training Education program of Saint Louis University's College of Health Science. You'll learn about proper warm-up, stretching and conditioning techniques, along with common sports injuries and how to avoid them. At the Saint Louis Science Center.
10 a.m. to noon. $12 for Science Center members per person; $14 for non-members. Recommended for kids 5th grade and older and families. Reservations required.
More information: slsc.org
Celebrate the arrival of Spring and with it, new growth at the Waldorf 
School of St. Louis Mayfest in Tower Grove Park. This fun-filled community celebration is free and open to all. You can bring a picnic lunch, or create your own picnic, because the Tower Grove Farmers Market will be in full swing at the park.
The Fox Park Neighborhood Association will hold its annual Health Festival on April 25. This free community festival is open to all and features:
Ballpark Village will host free crossfit classes this spring and summer on the Busch II infield. Classes will be led by local crossfit instructors and will be held on select Saturdays at 10 a.m.
More information: stlballparkvillage.com
ROOKie Readers is a literacy program designed for children ages 2-5 and their caregivers. Each week. little ones can enjoy a different story and a variety of games and activities. Each session lasts approximately one hour.
Cost is $5 per adult/child pair. Free for members of the World Chess Hall of Fame. One adult per child required. There is a limit of 12 adult/child pairs per session.
10 a.m. At the World Chess Hall of Fame in the Central West End.
Bring your child, ages birth through 2, to Breakfast with Baby, designed to foster your child's early understanding and appreciation of the visual arts. Each session includes light refreshments, socializing, and an activity led by an early childhood educator. Each session focuses on a different area of creative and cognitive development.
At the Gateway Arch, the $3 entrance fee included in each adult Tram Ride to the Top and adult Documentary Movie ticket is waived, reducing the cost of each ticket.
Learn about Waldorf education by observing classes in session at the Waldorf School of St. Louis.
Explore songs, finger plays, music and more during this Music & Movement class for ages 0-6. Some sessions are held in person at various branches of the St. Louis County Library. Some sessions are virtual.
Explore the Saint Louis Zoo in the evenings at the Chinese lantern festival Animals Aglow! Animals Aglow returns to illuminate the Saint Louis Zoo for the second year with dozens of new, towering lanterns and light displays.
Visit The Magic House for Toddler Time, a special early-morning program for toddlers. Children age 1-4 can take part in exhibits and exclusive interactive activities designed just for little ones. There are new themes every week!
Open Gym at Miss Kelly's Gym is an opportunity for any child to have supervised free play in the gym. They can work on existing skills, try something new, or simply play around. It is completely up to them! Open Gym is open to both members and non-members ages 12 and under.
