The activity requires students to load their "slingshot" by stretching the rubber bands back to the third screw and holding it in place with the string.
(The activity; requires; students; to load their "slingshot" by stretching the rubber bands back to the third screw and holding it in place with the string) (students; to load; their "slingshot)
The activity students
requires to load
students to load their "slingshot" by stretching the rubber bands back to the third screw and holding it in place with the string
their "slingshot