This is an ingenious construction system that stimulates children s creativity while it teaches simple mechanics  Children will have fun exploring ways to combine the colorful variety of pieces - square plates interlock easily to form flat or 3-D structures  Meshing gears creates exciting movement in a spectacular chain reaction  Each gear is decorated with a different design that simulates color perception and recognition  KALEIDOGEARS has no small parts and is made of soft  washable plastic  totally safe and unbreakable