Waldo Young is the musician scheduled to play at 6:30 p.m. July 25 for the Watermelon Wednesdays concert at Slippery Rock Park. The address is 329 N. Main St., Slippery Rock, but the concerts take place at the other end of the park, near the basketball court and pavilion.

SLIPPERY ROCK — Slippery Rock Parks and Recreation will offer a number of activities this summer:

• July 11, 18 and 25 and Aug. 1, 6:30 p.m., Watermelon Wednesdays offers free performances by bands and watermelon.

• July 18, 6 to 8 p.m., BFF Camp, in which children in grades three through six can take a best friend and make a matching T-shirt and friendship bracelet.

• Aug. 4, 8 a.m., Junk in Your Trunk, in which participants can pull into a parking lot and sell items out of their vehicles’ trunk. Registration fee is $5,

• Aug. 18, 8 a.m., Triathlon at Armco Park, Route 173. Participants will swim, bike and run through the park. People who register by Aug. 3 pay $15 and get a free T-shirt. People who register after that will pay $20.

• Mini camps for children will take place every week in the summer, from 9 to 11:30 a.m. Wednesdays through Fridays. Each camp will have a different theme. There are camps for two different age groups, ages 3 to 5 and ages 6 to 10. Call the park to register and get more information.

• The park also offers discount tickets for Regal Theater, Sandcastle, Pittsburgh Zoo, Kennywood, Cedar Point, Splash Lagoon, Waldameer and Idlewild and Soak Zone.

The park is at 320 N. Main St. To register for programs, call 724-794-8180.