Ive always started absolute beginners by standing em on a flat surface. Push em along abit just so they can feel what its like. Then i move em into turns on a gentle slope by looking and pointing around the turn until they stop (Facing slightly uphill). Then doing the oppisite turn. Then stopping. I usually have them linking turns confidently in a couple of hours.
And then they get stuck on greens for the rest of the season because you taught them to turn using their upper body, right?