Did this happen to anyone else while taking segment 1 of drivers ed?

At the beginning we get a slip that we write the dates and times that we drive at on. At the end we give it to our teacher and it's like proof that we drove. It also helps remind us when we are driving. I lost mine. Has this happened to anyone else? If so what happened? I have only driven 3 times so i still have to drive 3 more times so I'm hoping my instructor won't care and I can get a new one, but I'm scared I like won't be able to get my permit or something.