This is a text-based presentation, introducing a variety of different elements of Critical Thinking. It is very, very thorough, and also includes quizzes on the material.
Go to Materials
This page provides a good overview of a lot of different elements of Critical Thinking. It includes quizzes, so that if students were to cover the material outside of class, the professor could check their work. One could also pick and choose the sections to cover, as appropriate for topic or interest.
As a text-based format, it is not especially stimulating (though the author does his best not to be too dry). Also, the volume of information could be overwhelming, and make it unclear what to include and what not to include in a class.
Recommendations for use
The professor could use this source for his or her own overview of what Critical Thinking is about, and perhaps assign certain pieces (on arguments, for example) for the class.