The third Annual SummerDance Celebration will take place on Saturday, August 24 in Millennium Park from 1p.m., to 8p.m., and will feature a full day of participatory dance competitions, social dancing, lessons and performances by local dance companies throughout the park.  A Chicago Dance Showcase at the Jay Pritzker Pavilion stage from 6:30 to 7:30 p.m. will feature performances by local dance companies Hubbard Street Dance Chicago, Cerqua Rivera Dance Theatre, Joel Hall Dancers & Center, Rated E Dance Crew, Urban Vibe Dance Company Chicago, Diosas and The Future Kingz. Admission is free. For the complete schedule, visit chicagosummerdance.org.