Storyboards

A storyboard is a series of a box that are drawn in to show what the film/video will contain. The storyboard will have a drawing of actors, what they need to do, a description pf the shot type and a description of what's going on. 

A storyboard is usually laid out like in this picture. It'll have numbered boxes for the drawing with text underneath. The text will be what kind of shot as well as the short description of what the actors are supposed to be doing and saying. It will also have arrows and other symbols to indicate movement.