The Equation Maker provides a hands-on approach to learning basic addition and subtraction facts. This is a great product for both visual and tactile learning styles. This comes with interactive, push-button lights on the bottom (runs on one 9 volt battery), and colorful matching wooden beads on the top that can slide from side to side. The middle row has three dry erase boards and a flippable addition/subtraction piece. The base of the Equation Maker is solid wood. Kids won't even realize they