These vocabulary words should be interspersed in every lesson. An appreciation of great works of art throughout the ages. Each lesson should contain at least a review of a master work of art. An experiencing of the various media of art. Children should be exposed to a wide variety of media.
Creativity needs to be encouraged.
Younger students especially need to hear that their ability to put something on paper is not the important thing. Their abilities and their fine motor skills will develop over time. Their art technology will continue to advance from finger painting to crayon drawing to pencil to ink to paint all the way through sculpting, photography, computer art, video etc. Their ideas may be in computer graphics, but their technology may be in pencil. Real art takes place in their imaginations.