Build your maze, and then use the coding cards to create a step-by-step path for the ProgrammableRobot Mouse.Program the sequence of steps, and then watch the mouse race to find the cheese! This deluxe set includes 30 double-sided coding cards, 10 double-sided Activity Cards, cheese wedge, and Activity Guide to provide the perfect hands-on introduction to coding concepts. Create endless maze path possibilities with 16 maze grids, 22 maze walls, and 3 tunnels. Mouse lights up, makes sounds, and features 2 speeds. Mouse measures 4"L and requires 3 AAA batteries (not included).