Kids count gumballs, combine shapes, measure flowers and more with our hands-on light-up centers! Each center includes 10 translucent activity sheets, a variety of see-through manipulatives, plus a light-up board that stores all the pieces. Children simply switch on the light and use the manipulatives to complete engaging activities right on the board. Complete set includes all 3 centers shown. Plastic boards measure 9 1⁄2" x 10 3⁄8". Each board requires 3 “AA” batteries (not included). Each center also available separately below.