Trying to make an Open Book Quiz that is very comprehensive and will take the students several hours to complete. I would like for them to be able to work on it for a while, have the answers save and then they can reopen it where they left off. I know how to make a quiz with multiple attempts but in my experience it "erases" their answers and they have to start over. I don't want to them have to re-answer any questions but just pick up and complete. Suggestions?