In this paper, new support functions of a power wheelchair are proposed. These functions restrict joystick input, and restricted input is released in a systematic process according to the progress of user's proficiency. Three kinds of restricted modes were used: “one-shot forward mode” where the wheelchair moves forward at a given time regardless of the input direction of the joystick; “one-shot all-round mode” where the wheelchair moves as directed by joystick input at a given time; “quantity limited one-shot mode” where the wheelchair stops immediately as soon as the joystick is pressed fully. We conducted a trial of adaptations of the wheelchair at a school for children with physical or developmental disabilities. During the trial, teachers used the wheelchair with creative ideas according to the characteristics and needs of each student. The results indicate that the wheelchair may be used as a mobility support system or an educational material (or play equipment) to promote sensory integration through movements.