The Socratic Method is a way of questioning one's knowledge and theories of the world in a way that exposes gaps, discontinuities and contradictions in a productive way.
Instead of telling our students how wrong they are - which is not productive in my experience (see also: using spite as a motivator) - we create an environment of exploration and learning that allows us to identify those parts of knowledge that could do with a review, for example because we find out that they do not apply to a certain set of circumstances, or because we find out that they are in stark contrast with the rest of reality as we understand it.
Look up the Socratic Method on Wikipedia for a decent primer.
On the Quality of Sources
Please note that I am using a link to Wikipedia for this article. Wikipedia is not a good source for confirmed information. What Wikipedia is, however, is a great training ground for critical thinking and the questioning of sources and self. In the scope of this article, that seems just perfect.