About the Share category

When you’re ready to share and post your amazing projects.

I there I am a high school student in Vancouver BC and I am told by my teacher that I have to use Prezi for our project. I am having trouble sending him a copy and he does not want it by email, he only wants it if I put it into a file. Prezi does not allow me to do that unless I pay and I do not work and therefore I have no money. I was wondering if there was a way around this?