dborck on "Incorrect page formatting"

I am working to help with problems on a teacher's blog at http://lambsearthscience.wordpress.com/. When you view the blog the formatting is completely wrong. The post below on my blog shows screen shots of what it currently looks like compared to what it should look like. The only thing I have found for her to try is in the writing settings. I have told her to check to automatically fix the xhtml settings. She hasn't tried this yet but I thought I would go ahead and post here for suggestions. Any help would be greatly appreciated.
http://dborck.wordpress.com/2008/07/30/problems/