Here’s a skill-building version of the classic kids’ game red light, green light. One player, the traffic cop, stands on the sidelines of the playing area; the players line up at one end, each with a soccer ball. The cop turns her back and yells, “Green light!” and the players start dribbling their balls across the field. When she yells, “Red light!” and turns around, the players must stop immediately — and trap their balls. If they don’t, they go back to the starting line.

The first player to cross the field becomes the new traffic cop.