If your professor allows you to include information found on websites in your assignment, it's important to evaluate whether that information is appropriate and trustworthy. Use the following criteria to evaluate web-based information.
Can you determine when the page or document was created/updated? Is the date recent enough for your topic?
Does the information answer your question? Is it at an appropriate level?
Where does the information come from? How reliable is the information? Is the language unbiased and free of emotion? Are there spelling, grammar, or other errors? Does it lack citations?
What are the author's credentials? What kind of organization sponsors or supports the site?
Is the author's purpose to sell, persuade, entertain, teach, or inform? Does the point of view appear objective and impartial? Is the information fact, opinion, or propaganda?