Bring mathematical fun to the light table with these Light Table Numbers. Help children explore the STEM properties of color and light while building number recognition and mathematical skills. The color acrylic numbers shine brightly when placed directly on the light table. Lay the numbers on top of one another to examine color mixing properties. The learning opportunities are endless when you add the number to a light table and have children use counting chips to represent the amount. The 2 ¾” H. acrylic numbers are large enough for small hands to maneuver and manipulate. Each acrylic number contains a hole at the top for hanging displays or for using in natural light. The 12 piece set of bright and colorful acrylic numbers are designed to last for years in the classroom. The numbers can be used for light tables and water tables for sensory play. Light Table Numbers are a great addition to classrooms, preschools, and the home environment. They can be cleaned with a mild soap and water mixture and a soft, damp cloth. For children ages 3 .