 From left to right facing forward, Elena Bollman, 8, (lying down) Arianna Dougan 8, Madison Lamoureux 9, Anastasia Chostner, 8, and Madeline Miller, 8, (with glasses) laugh as they land after falling backwards as part of a dance number at St. Louis Academy of Dance in Olivette on Tuesday, Feb. 10, 2015. Dougan is currently undergoing treatments for neuroblastoma. When she was too sick to attend class, her teachers came to her as part of a dance therapy program. 