Andover: Bring your favorite stuffed friend to a Teddy Bear Picnic. Thursday, 10 a.m., Andover Historical Society, 97 Main St. $7 per child, $5 per adult. 978-475-2236.
Gloucester: Gloucester Harbor will blossom into the colorful 31st annual Gloucester Waterfront Festival, featuring 250 booths of American-made arts, crafts, food, and live music. Plus a pancake breakfast, lobster bake, and antique car show. Saturday and Sunday, Aug. 20 and 21, starting at 10 a.m. Stage Fort Park, Hough Street and Stacy Boulevard. Free. 978-281-6304, www.castleberryfairs.com.
Medford: The Springstep Summerfest 2011 offers a chance to try out over 15 different dance and fitness classes, including country Western line dancing, hatha yoga, hoop dancing, and more. Each class will run for 50 minutes. Aug. 21, 1 to 5 p.m. Springstep, 98 George P. Hassett Drive. $5 donation, children free. 781-395-0402, www.springstep.org.
Event organizers: Submit items directly to boston.com/addevents.