Physical Therapy deals with gross motor development. Some examples would include trunk strength, crawling, walking movement of arms and range of motion.
Occupational Therapy deals with fine motor skills. Some examples would include self feeding, eating, drinking, movement of the head, grasping with the hands, and writing.
Speech Therapy deals with not only expressive speech (speaking) but receptive speech as well (hearing and understanding).
Hippo Therapy uses horseback riding to address Physical Therapy, Occupational Therapy and Speech Therapy all at the same time.
Sensory Integration Therapy deals with sight, sound, touch, taste and smell. Some of examples of Sensory Integration Therapy would be exposing the child to different tastes, textures, sights, sounds and smells.