This 19 piece set of 9 in. x 9 in. panels includes 11 solids in brown(soil), tan(sand), green(vegetation), light blue(sky) and grey(stone) colors with 8 white(clouds) windows. Develops both fine and gross motor skills, patterning, shape recognition, and building. Their large size and magnetic connection empowers creative play. Surfaces are dry-erase compatible for the complete STEAM experience. Perfect size for homes, home-based day care, preschools and multi-child play. Comes with STEM activity guide with sample constructions.