When creating assignments, teachers have the option to set a time limit for the assignment in the assignment settings.
Once you have created an assignment and selected recipients, you will arrive at the Assignment Options page. Find the Time limit (minutes) box and enter the number of minutes you want your students to have to complete the assignment.
If an assignment is timed, the timer will continue to run even if the student signs out, closes their browser tab or window, or hits the back button on their browser. This is done to combat cheating on timed assignments, so students should be prepared to complete the assignment in one sitting.
If you do not wish to have a timer, simply leave the time limit blank.
Note: Once the timer has expired, teachers cannot reset students' assignments.