Read engineering and architectural drawings, sketches and work specifications to be performed, and lay out, measure and mark sheet metal according to drawings or templates.
Note the differences in formality and personalness and the degree to which the students recognize the hierarchical difference between themselves and the teacher.
Curiosity is the main driving force that propels a child, who is often intrigued by vibrant illustrations and colorful play cards, to turn the pages of a foreign language book.
Now for some reasons why full feeds are in a publisher's (and a reader's) best interest. I think Mike Masnick at TechDirt hit the nail on the head earlier this week when he posted about this question.