The two-column note-taking method basically asks you to record "what the text says" in the the left-hand column: What is the denotation? What is the sign?
The right-hand column asks you to record "what the text does or makes you think": What is the connotation? What does it signify.
Bloom's taxonomy, illustrated above, breaks cognition down into categories and is useful for ways to think about how you are reading and developing your ideas (see handout*).
* thanks to Zapoura Calvert