Have the children form a large circle, sitting down, facing inward.
Have all the students close their eyes. Go around the circle and tap one student on the shoulder to be the “assassin” (or “sandman”).
The role of the “assassin” is to wink at other students secretly. If you get winked at, you must “die” dramatically and lay down.
Students may make a guess as to who the “assassin” is. If they are correct the game is over. If they are incorrect, they “die”. Great cool-down.