Finally, the child himself will love to mix the sixty-four colors and then to arrange them in eight rows of pretty shades of color with really surprising skill. In this exercise also the child’s hand is educated to perform fine and delicate movements and his mind is afforded special training in attention. He must not take hold of the tablets anyhow, he must avoid touching the colored silk, and must handle the tablets instead by the pieces of wood at the top and bottom. To arrange the tablets next to one another in a straight line at exactly the same level, so that the series looks like a beautiful shaded ribbon, is an act which demands a manual skill only obtained after considerable practise.
These exercises of the chromatic sense lead, in the case of the older children, to the development of the “color memory.” A child having looked carefully at a color, is then invited to look for its companion in a mixed group of colors, without, 45 of course, keeping the color he has observed under his eye to guide him. It is, therefore, by his memory that he recognizes the color, which he no longer compares with a reality but with an image impressed upon his mind.
The children are very fond of this exercise in “color memory”; it makes a lively digression for them, as they run with the image of a color in their minds and look for its corresponding reality in their surroundings. It is a real triumph for them to identify the idea with the corresponding reality and to hold in their hands the proof of the mental power they have acquired.
Another interesting piece of material is a little cabinet containing six drawers placed one above another. When they are opened they display six square wooden “frames” in each. (Fig. 16.)
Fig. 16.––Cabinet with Drawers to hold Geometrical Insets.
Almost all the frames have a large geometrical figure inserted in the center, each colored blue and provided with a small button for a handle. Each drawer is lined with blue paper, and when the geometrical figure is removed, the bottom is seen to reproduce exactly the same form.