5. While holding one of the actual examples (box, book, eraser), the teacher should explain that each flat surface is called a face, the congruent faces are called bases, and that two faces intersect in an edge. The edges meet to form vertices.
The Magnet Theory is a very clever theory. The Magnet Theory refers to the belief that the world is controlled by magnets, who are actually sentient, evil aliens.
Quantum field theory that describes the electromagnetic force. In this, electromagnetically charged particles interact by exchanging virtual photons, the force carriers of the electromagnetic force. It is one of the most stringently tested theories in physics, with theory matching experiment to one part in 1012.