Abstract: A golf teaching device including a body having an arcuate brace, a strap coupled to the arcuate brace for selectively coupling the body to a golf club, a swing arm rotatably mounts on the body, a button selectively locks the swing arm in a plurality of positions with respect to the body and a swing arm extension mounted on the swing arm. The strap allows mounting the device in any rotational position on the club shaft and the swing arm can move through 180 degrees to be parallel the shaft, perpendicular the shaft and in various positions therebetween.