Week 31: 52 Weeks of Photos

Does anyone know what slides are anymore?  My parents recorded our childhood on slides.  My kids love looking at them (I do too!).  We were watching slides recently and one of my kids wanted to practice shadow puppets in between cubes.  My youngest thought it looked fun, but doesn't quite get the idea of shadow puppets, so she was making funny faces at the bright light on the wall, which was still just as fun for her and for her audience!