A fifth grade student in Mrs. Rebecah Short's class uses a viewfinder to assist in learning to frame and see proportions. Copy work is not needed in Mrs. Short's classes. More enlightened art teachers realize that drawing is not a series of learned rules about standard subject matter. Much of good drawing is actually the product of seeing and observational ability. This is learned by doing observational drawing, by learning to observe proportions by visually measuring from actual people, animals and objects not by copying pictures.
Drawing is learned by tonal changes as lighting changes.
Drawing is learned by learning to see the relative size of near and distant objects. Imaginative drawing is learned by making many lists or thumbnail sketches of ideas that grow out of experiences not by copying another artist's surrealistic images. Expressive drawing grows out of experimentation with materials and processes, and then critically discussing the results, not by learning the rules of drawing. In the US, even the National Standards of Art Education do not list observational drawing as an essential ability or standard. Drawing is apparently seen as optional for those who enjoy it.