The caller calls out a number, if the students number is called they run under the parachute and try to grab the object. They need to try to get out from the parachute before it comes down. If you get caught you become the caller. All the rest of the students sit with their legs under the parachute. The shark tries to pull the students under the parachute.
Lifeguards try to save the people being pulled under.
Object is to get all the students to be sharks. Popcorn a. Try to keep all the balls on the parachute, but getting them as high as possible. There is no written test to see if the students mastered the objectives. What you need to observe is did they work together on the last activity to keep the balls all on the parachute. That also takes control from every member of the team.