Hi @AngelitaSalazar ...
Based on your question, I assume that you are a student at your school? If this is the case, then you might want to review this Guide:
How do I mark a module item as done for a module r... - Instructure Community (canvaslms.com)
Make sure to also read through the light-blue box at the top of that Guide for additional information.
Let Community members know if you have additional questions about this. You might also want to check in with your instructor if he/she is requiring that you use this check-off option in your course(s).
Hope this helps a bit!
