For three days, all K-12 teachers, administrators and employees get free admission to the Hill Country Science Mill, a non-profit science center offering a fun, interactive learning environment for the whole family. Explore unique exhibits and learn more about the Science Mill?s field trips and online Explorer Zone with field trip info sessions at 11am, 1pm and 3pm. Just show your employee ID at the front desk. Register online to win 4 free passes and $100 credit in the Science Store!http://sciencemill.org