Even if you do all this, but do not model it yourself it is quite
useless. You must be willing to practice what you preach. Don't be dogmatic and
pretend that you always have the answer. Students don't mind if you tell
them honestly that you don't know something. Base all your comments on both
sides of an issue and try not to use biased language. Always have good
reasons or evidence to back up the decisions that you make. This shows the
students that you have not made a rash decision but have thought it over.
Avoid stereotypical language and generalizations. Also avoid the use of
resources (books, movies, pictures, etc.) that have these stereotypes,
unless, of course you are using them to point out the stereotypes.
Please note that most of the information above was taken from "Thinking
Critically in Social Studies," by Roland Case at Simon Fraser University.