The Ball Tracker is a cause-and-effect apparatus designed for infants and young toddlers in the early sensorimotor stage, supporting visual tracking, object permanence, and the development of intentional movement. A child releases a ball and watches it travel a predictable path, which builds concentration and the understanding that actions produce repeatable results. It is a foundational piece for a well-equipped infant or young toddler community where you want materials that invite focused, repetitive engagement.