5 or more players each have a ball.
They are standing by the free-throw line in a semi-circle.
The coach gives each player a number while the goalkeeper stands with her back to the players. Now the coach counts 1 - 2 - 3 ... and each time a player hears her number, she shoots at goal.
The speed of counting is adjusted in accordance with the skill of the goalkeeper.

The coach may vary his counting after a few turns - example 4 - 2 - 6 ... which makes it more difficult for the goalkeeper to know, who will be shooting.

If there is any danger that the goalkeeper may trip over a loose ball, the counting is stopped.