If you're a teacher, or you know a teacher, then there is a great promotion currently running at The Franklin Institute in Philadelphia. Currently they are offering free admission for teachers to see the new exhibit SPY: The Secret World of Espionage. You must make reservations to enter for free and bring a valid teacher ID with you. The promotion is only for teachers within the area, including DE, NY, MD, PA, and NJ.
Advanced Registration is required. Call 215.448.1200 and plan your visit. Non-educator tickets: $28.00/Adult | $19.00/Child (3-11) General Admission included
*Educators in grades Pre-K-12 must register at least 24 hours in advance to receive free Museum Admission and entrance to SPY: The Secret World of Espionage. Does not include entrance to Franklin Theater or IMAX. Free admission is for Educators in DE, NY, MD, PA, NJ only AND School ID is required when checking in at will-call. Offer valid for visits through September 2, 2013.