This 12-set color three-part card collection pairs naturally with the Color Tablets, extending sensorial work into language by giving children precise nomenclature for the shades and hues they've already encountered through touch and visual discrimination. It's especially useful in the 3–6 environment as children move from the concrete tablets toward more abstract color classification and reading readiness work. The range of 12 sets gives you enough variety to layer the material gradually rather than presenting everything at once.