Understand the scientific principles of a head-mounted device, learn with interest, and assemble your own cardboard to experience your very own VR! The Edu Cardboard can be seen as a VR experience device made from paper. By folding the cardboard into the expected shape and attaching convex lenses, you can mount a smartphone to experience VR. One of the most notable examples is the VRWARE Edu CardBoard, which is easy and simple for anyone to make.