Brain box

 in science today my group and I were doing brain box. a type of science safe for kids with power electricity sound light and much more. for most of the time my group did not have the fuse to start the experiment there for our fan would not work. we tryed a lot of things but it would not work why? because we did not have the fuse. later on in the day we got the fuse for the batteries so we put the fan back together and put in the fuse and we and tested it. the fan was going so fast that the entire fan flew in the air.