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.
If you've ever played with magnets, then you definitely know that they exert an invisible force on each other. However, there is a very specific direction to these forces depending on which poles are near each other. Another fundamental property of magnets is that similar poles repel, while opposite poles attract.