Your task is this:
- Pick a news story that will have been reported on and discussed across the spectrum.
- Read about that from one or more mainstream sources.
- Then read about it in one or more partisan sources on each side.
- Lastly, write up you observations about how their bias manifests itself. Refer to the texts to do so. Are the fringe sources telling the whole truth? Lies? Hyper-focusing on something and blowing it out of proportion? Using inflammatory diction? Mocking the other side? Etc. Etc.
Post this on your blog.
News Source Chart in Color (PDF)
As a side note, Bucknell University has this site to help figure out how to determine whether a site is credible or not. http://researchbysubject.bucknell.edu/framework/auth