The teacher's work should by no means be confined to teaching the use of tools and making models. The lectures that he gives should interest his pupils in the study of the history of tools, and the nature, use and manufacture of metals. This will lead to a closer study of General History, Literature, Geography, Geology, and Physics.

He should be able to refer his pupils to books upon these subjects, and in class have them relate what they have found. Great care should be taken in teaching the correct positions of the body while handling the tools, and illustrating how the body is developed by right exercises and injured by wrong exercises.