Children who cannot pivot, crawl, creep or walk often benefit from equipment that helps them move about independently and explore their environment. Mobility products include hammock swings (similar to the Skillbuilders(R) crawler) and prone extension boards like the Turbo-X TM and J-type TM. Scooter boards can help a child learn to belly-crawl or creep on all fours without the need for coordinated movement of the legs.