Curling is one of the newest medal sports in the Winter Olympics. It can be described as bocce ball or lawn bowling on ice. Curling is often identified by the two sweepers who walk or slide with the stone and sweep the ice in front of the rock to help it travel further and straighter.
The object of the game is to slide, or throw, stones down a 145-foot sheet of ice into a set of concentric circles known as the “house”. Two teams, or rinks, of four members alternate throwing rocks. When all the stones are thrown, the rink with the stone closest to the center of the house, or button, scores points, one for each stone closer to the button than the other rink’s closest stone.
For more details, what this short video from the United States Curling Association explaining the basics of curling: