The composition or make-up of the page.—Other things being equal, that arrangement of the page is best which helps a child most to keep his place on a page and to find it after having looked away to work on the paper on which he computes, or for other good reasons. A good page and a bad page in this respect are shown in Figs. 40 and 41.
Fig. 40.—A page well made up to suit the action of the eye.
Fig. 41.—The same matter as in Fig. 40, much less well made up.
Objective presentations.—Pictures, diagrams, maps, and other presentations should not tax the eye unduly,
(a) by requiring too fine distinctions, or
(b) by inconvenient arrangement of the data, preventing easy counting, measuring, comparison, or whatever the task is, or