The Color Tablets Second Box introduces children in the primary environment (ages 3–6) to graded shades of eleven colors, building on the foundational color-matching work of the First Box. Each pair of tablets is crafted with consistent weight and finish so that children isolate the visual impression of hue and tone without tactile distraction. This material is essential for classrooms where children are ready to refine chromatic discrimination and develop the precise color vocabulary that supports later work in art and geometry.