Thank you for your interest in the Montessori Color Box 3 material! This material is a printable version of Color Box 3, a standard Montessori Sensorial material. The children grade the colors from darkest to lightest (or vice versa). This printable material is perfect for home schooling families or Montessori classrooms that do not own Color Box 3, which can be expensive to purchase. The pack includes two sets of Color Tablets, a set with white frames and a set with brown (like wood) frames. P