In science class we had to make a life jacket out of foam to keep a person head above water. We weren’t successful the first few times but then we knew what to do. At first we put the foam around the back of the person but it flipped the person over so it’s head was underwater. Then we cut the foam and wrapped it around the head and it worked.
Our design was successful but we did mess up a few times. It was successful because we put the foam around the head so it didn’t drown.
We could have made it better by letting the person lay on it’s back.
The life jacket make the man less dense so he can float instead of sink.