Overhead Projectors and VCRs, Oh My!
Remember when the teacher used to bring this out? It’s an overhead projector that uses light to project an enlarged image on a screen, allowing students to view small documents or pictures. Teachers would also write on the surface of the screen to show students how to do math equations and things like that. But sometimes, teachers popped an educational video into the VCR and let the television take over for 30 minutes.