A Strange and Nonsensical Adventure

Ms S, my English teacher, is the instructor. We are (re)learning how to use these giant spinning glass spheres. You go inside and you either use the controls (not sure if there were any) or you somehow use your body to move it. The spheres go around and rotate from one side of the tunnel to the other (like an upside-down U). The spheres spin as well.

In the beginning I had one arm hanging out of the sphere and I was going to fix that, which I did, because it was dangerous and I felt like my left arm could get cut off any moment. Somehow it slips out again and Ms S comes over to tell me that I can't have my arm like that. I say something along the lines of "yeah, I know, I was just going to fix it" and I do. T and possibly C are also there.

I explain stuff to newbies and some understand and Ms S says that I'm really good with kids because they understand me, and I'm like "well I have to understand the thing first, which is saying something..." T says that she used to be able to go faster (prob in the AP course or something, I used to take it too).