From the website:
The Children's Science Center is a 501(c)3 non-profit organization and interactive museum where children, families and school groups can explore science, technology, engineering and math (STEM) concepts through fun, engaging hands-on exhibits, activities and programs. We serve over 70,000 visitors a year at the Children's Science Center Lab at Fair Oaks Mall and through our community programs delivered to schools, libraries and STEM festivals across Northern Virginia.