As you can see from the comment two posts ago a young blogger, Dan Klumer, asked me to e-mail him (which I did). So I went to his site and the Prezi above is what I found. Well this is what I like about being online. He has a great Prezi on Mesopotamia which you or I could now use and reformat to our liking and could thus be collaborating with another teacher we may never meet. This is why I started this blog, so thanks Dan.