Yes - you can edit and re-run an activity after it has been completed.
- Log onto your teacher account
- Click on the Activities panel
- Click View activities
- Click repeat or extend next to the activity you would like to set
- You can then edit the activity before repeating it again for your student
Extending a assessment will extend the end time of the assessments.
Repeat an assessment at the end of the year to assess the improvements in your students math.