Constructive Playthings Exclusive Light Panel Exploration Tray allows children to experiment with multiple materials on the light panel without causing a mess! The exploration tray is specifically designed to fit on our most popular Light Panel (sold separately CHG-74) or it can be used separately. Add colored sand to practice drawing letters and numbers on the light panel. Add colorful translucent counting chips or stackable counters for color exploration. You can also add water to study the reflective properties of objects under water. The possibilities for our Light Panel Exploration Tray are endless. It is constructed from clear polycarbonate adding durability for years of daily classroom use. The polycarbonate gives the tray incredible strength and rigidity, even when filled with water the tray can be moved without flexing and buckling. Our exclusive Light Panel Exploration Tray measures 22 1/4" x 17 1/4" x 4". The exploration tray can be used with or without a light panel in classrooms, preschools, and in the home environment. It can be cleaned with a mild soap and water mixture with a soft, damp cloth. For children ages 3 yrs. +.