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.
Introduction. Magnets have north poles and south poles. These attract each other. But two north poles will repel each other, as will two south poles. Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Most other metals, like aluminium, copper or gold, are not magnetic.