How do sexually transmitted diseases spread? The students will be speechless literally when you finish this activity. One of them has the AIDS virus and unknowing spreads it to almost the entire class. There are a few with special directions and they are the only ones who find themselves safe!!! I always put glow powder on the cards before we start. After we finish spreading AIDS I tell the students that pink eye was also being passed around the room. I have included that activity as well.. KEEP YOUR HANDS AWAY FROM YOUR FACE. Your students will leave with so much to discuss with their peers and at home. This is one of my favorite lessons. Totally awesome!!!!