2 years & up. Invite children into a world of outdoor exploration as they seek out objects of certain colors and textures and complete early childhood sorting activities. The 24 tiles encourage three methods of discovery: by color, by texture, and by the object itself. Children can bring pieces of nature inside to sort or go on a nature hunt to find the natural items that match the words specified on the tiles. Either way, children are sure to enjoy the interactive indoor/outdoor component of this sorting tray. Perfect for the outdoor classroom! Tray measures 20"L x 3"W.