ere the best possible material expression of the six localities in the spectrum corresponding to the feeling or psychological perception of red, orange, yellow, green, blue and violet. Many subsequent experiments have apparently proved that practically the same six colors best serve the purpose of primaries from which to make all others by combination.
In accordance with these selections the educational colored papers have been made, and since that time an expert scientist has accurately located each of these colors in the spectrum by its wave length. Consequently after the children have come to know the six colors in the sun spectrum the six standard colors of the papers may be shown as the best imitations possible. In studying the six colors from the spectrum in a schoolroom it frequently happens that one color may be best seen on the floor, another on the wall or even the blackboard, and another on the ceiling, and after the order of the colors in the whole spectrum has been observed, it is well to get each color where it can be best secured.
When the spectrum has been studied so that the children have some idea of the six colors and their location relative to each other, give each of the children a package of the colored paper tablets, one inch by two inches, containing the eighteen normal spectrum colors, i. e., those in the central vertical column in the Chart of Pure Spectrum Scales, Page 41, and tell them to select from the eighteen the six which they have seen in the spectrum and which may be named to them as red, orange, yellow, green, blue and violet.[1]
- ↑ Tablets of paper instead of cardboard are recommended because in primary instruction the standards or types of color presented to the child ought to be the purest possible expressions of the colors represented, and a piece of color material cannot meet this requirement after having been used one year by a child. The necessary expense of cardboard tablets practically precludes a new supply each year. But the papers can finally be used to form, by pasting, some chart or combination which the pupil may be allowed to own as a sample of his work.
