The Whitney Brothers’ Light Table encourages young students to experiment with basic shapes and color. Beginning learners can place shaped objects on top of the translucent acrylic surface and see light shine from underneath. Simply reach under the top to change the lightbulbs when they go out (two AC bulbs included). The birch plywood base is at just the right height for preschool kids, and it's sturdy enough to stand up to heavy use in any busy daycare.