Through play, infants gain an understanding of cause and effect: “if I do this, that happens.” Often actions resulting in auditory responses leave early learners in the dark because the source of the sound is hidden from view. Rolling Shapes solves that mystery. Whether shaking the rattle or spinning the cylinder, the child both hears and sees the basic shapes in bright primary colors move around inside the clear cylinder, reinforcing the connection between action and reaction. Easy to grasp and manipulate, Rolling Shapes Rattle provides auditory, visual, and tactile stimulation and encourages fine motor development. Assorted colors.