Students have more information at their fingertips than ever before, yet the challenge remains for them to find, evaluate, and apply the information they discover in the classroom and beyond. Applying critical thinking skills through web research can help students:

• Improve search skills.
• Evaluate the information they find.
• Incorporate them in their work.

Lessons plans and demonstrations from  Microsoft  to help  students develop critical thinking  about the validity of information on the net   http://www.microsoft.com/education/teachers/guides/critical_thinking.aspx