The importance of movement for the physical and mental health of a person is widely known nowadays, but the importance of movement for the overall development of a child cannot be overemphasized. For development to be healthy and complete, children need a lot of stimuli from their sensory organs, and the best way to feed the child's brain with stimuli is precisely through movement, where not only one type of sensory information is obtained, but various sensory stimuli from the entire body strike the neurons in their brain. Children with developmental disabilities are less motivated to participate in motor activities, which is why they often need additional encouragement to explore the environment through movement. It is for this reason that we use Rehabilitation through movement when encouraging the development of children with developmental disabilities. There are many ways in which we can implement movement and Rehabilitation through movement in working with children with developmental disabilities, and one of them is certainly through sports, in this case handball. Guided by this idea, the famous Croatian handball player Maida Arslanagić, who is also a master's degree in speech therapy and sports management, as well as a handball coach and Floortime therapist, launched the HandbALL IN program five years ago. HandbALL IN is a sports inclusive program for children and youth with developmental disabilities. Today, the program has been verified by the Croatian Education Agency and has more than 120 participants, both adults and children with developmental disabilities, all of whom only have one goal - to enjoy handball. In this paper, handball will be presented as a means of encouraging the development of children with developmental disabilities within the framework of Rehabilitation through movement as a specific educational-rehabilitation procedure. For this purpose, five sessions of Rehabilitation through movement will be presented with an emphasis on handball elements and the use of a handball. All of the sessions were created in collaboration with the program HandbALL IN as well as with the originator of that program, Maida Arslanagić.