Offers much more flexibility and eliminates the need for the creation of overhead slides. A document camera allows users to project documents and other objects on a screen or television. Document cameras are a great way to take advantage of technology in the classroom. Think, the modern classroom’s overhead projector with a heap of extra bells and whistles. A document camera connects to a projector either by a direct connection or through a computer that allows the teacher to display real-time video, books, math problems, science experiments, maps, images, student work, and much more.