Direct:
To provide the child with a key to orient himself in the world of color.
 
Control of Error:
The child’s ability to discriminate color.
 
Age:
3 – 3.5 years for Box 1 and Box 2
3.5 – 4.5 years for Box 3
 
Box 1:
6 tablets; a pair of each of the primary colors (red, yellow, blue). These are the most sharply contrasted colors.
 
Box 2:
22 tablets; a pair of each of the primary colors, the secondary colors (green, orange, purple), and also pink, brown, black, white, and grey.
 
Box 3:
63 tablets; 7 shades of 9 colors: red, yellow, blue, green, orange, purple, brown, pink, and grey.