Dual-layer track design allows the ball to move forwards and backwards in response to the player’s motion, promoting balance and coordination. The seesaw design at the bottom enables the body’s right-left movement to steer the ball in four different directions. The design route imitates the tracing of letters to promote children’s learning ability. The base is combined with a clear coupling disk to create the dual-layer track, and the clear cover on top keeps the ball from escaping from the board.