What will I do differently in class when assigning reading text online

Iam having my Earth Science students use the web to find and research at least 4 sites on 2012 and to come back to me with what they thought about the sites. I am using the article as a guide to show my students how to navigate the internet but I am asking them to tell me if the site is using Fact or Fiction based on what we have discussed so far. Then I will go back over the sites with them.