Abstract: An exemplary embodiment includes an instrumented play center. The play center is a rehabilitation device that 1) positively reinforces head lifting during prone (tummy) play in typically developing infants and children with developmental delays; 2) increases opportunities for prone play; and 3) provides early intervention, physical and occupational therapists a rehabilitation device that can be customized to provide the “just right” challenge promoting prone motor control through interactive play. The play center provides an child with positive reinforcement by activating a toy when the child in prone lifts his/her head over an adjustable threshold.