Teens and Tweens

Explore the insects that fly at night that we can't see during the day in this family workshop run by entomologists at The Butterfly House.

Chalk Riot presents WordPlay, free summer chalk art workshops for ages 12-17.

No sign up is necessary for these two-hour workshops. Participants should bring a water bottle and wear clothes that can get dirty.

Word Play will be held at the St. Louis County Library at the following times and locations:

August 31 at 4 p.m. at Headquarters Branch

Find more information here or call 314-994-3300, ext. 2234.

Teens and tweens in grades 6 through 12 can learn how to create outdoor chalk art from Kris Wollaeger of Chalk Riot at this free workshop.

Registration is required. 4 to 6 p.m.

Your kids can test their might and compete with their peers in the Iron Kid Triathlon sponsored by St. Louis County Parks.

The competition consists of three part - a swim, bicycle ride and run. There will be two age divisions, 7-10 years and 11-14 in this friendly competition. Parents are encouraged to volunteer.

8 a.m. to noon at the Pavilion at Lemay. Cost is $20 per child in advance and $25 on the day of the event.

Explore the new GROW Exhibit at the Saint Louis Science Center during its Grand Opening, where your kids can make treats for the chickens, ride on mini tractors, meet Dorothy and the Scarecrow from the Wizard of Oz, enjoy live music, giveaways and lots more.

Teens can enjoy an evening of creative expression with other teens who love to make art.

Teen Pizza + Art Night gives teenagers the opportunity to assemble, construct and experiment with unusual materials while they collaborate with their peers. All materials, food and beverages are provided.

A Laumeier Sculpture Park in the Kranzberg Education Lab. For ages 13-17. Cost is $20.

7 to 9:30 p.m. For more information and to register: laumeier.org

If you're crazy about all things Firefly this First Friday at the Saint Louis Science Center is for you.

Activities include a live taping of the Geek Universe radio show featuring Dr. Dan Yezbick of St. Louis Community College about what makes Firefly so exceptional and why it continues to have a large following, crafts from Spiderloom and Arch City Crafts, makerspace innovations with Inventor Forge, a Smuggling Challenge, a Firefly photo opp, Coloring at First Friday and more.