Cody Belles, 12, left, totes Sara Galloway, 5, through Marvin Grove at Kansas University. Children enrolled in the Lawrence Parks and Recreation Department's Playground Summer Camp participated in a jam-packed day of activities Wednesday, including a trip to KU's Natural History Museum, a picnic in the grove and a stop at a downtown ice cream store. After lunch in the grove, Belles and Galloway found time for horseplay.