The teacher will make sure everyone has a place on the parachute (most parachutes have loops on the outside to hold it).
Before you start it is important that the parachute is tight.
So have some of the students walk backwards until everyone is in the right position.
It is easiest if the teacher gives the rhythm, later you can let the children do it themselves.
The teacher chooses two students who have to lay down on the ground under the parachute.
The remaining students raise and lower the parachute simultaneously.
Every time the parachute goes from high to low, the two students on the ground get a gust of wind and an imprint is left on the parachute when it hits the ground.