My kids probably just need practice. They have learned other things, like rollerblading, with some practice. Older two kids play their sport(s) at a reasonably competitive level - enough to get some interest from DIII coaches, so I don't think it is a coordination issue. It is just to the point that DD16 doesn't even want anyone to see her try to ride - and none of us want her to get hurt and miss her tournaments/showcases this summer.